Pump
critical
Known Models (117)
Alfa Laval MR
Marine-rated, per Hersteller-Datenblatt
· Fresh water/process liquids
pump_type: Centrifugal pump
drive_type: Electric
installation: Marine/process service
Common Failures:
- • Mechanical seal leakage
- • Impeller wear
- • Bearing wear
- • Cavitation damage under insufficient suction head
Service: Monitor leakage, vibration and pressure. Replace mechanical seal and bearings according to PMS or leakage/vibration condition.
Spares: Mechanical seal, bearings, impeller, casing gasket and O-ring kit are typical spares.
Alfa Laval LKH
Marine-rated, per Hersteller-Datenblatt
· Clean liquids/process water
pump_type: Centrifugal pump
drive_type: Electric
installation: Process/service
Common Failures:
- • Mechanical seal leakage
- • Cavitation erosion
- • Impeller wear
- • Motor bearing wear
Service: Check seal leakage, motor current and vibration. Inspect wetted parts and seal during planned service.
Spares: Mechanical seal, O-ring kit, bearings and impeller are recommended.
Alfa Laval SolidC
Marine-rated, per Hersteller-Datenblatt
· Water/process liquids
pump_type: Centrifugal pump
drive_type: Electric
installation: Process/service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear
- • Impeller wear
- • Cavitation from poor suction conditions
Service: Routine checks include pressure, leakage, motor current and vibration. Replace seal and bearings during PMS as required.
Spares: Seal kit, O-rings, bearings and impeller are normal spares.
Allweiler SNH
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil/thermal oil
pump_type: Three-screw pump
drive_type: Electric
installation: Engine-room oil service
Common Failures:
- • Screw and liner scoring from contaminated oil
- • Mechanical seal leakage
- • Relief valve malfunction causing unstable pressure
- • Bearing wear after low-viscosity operation
Service: Check suction strainer, relief valve setting and shaft seal leakage. Inspect screw set and bearing condition during scheduled overhaul.
Spares: Stock mechanical seal or gland packing set, bearings, gaskets, relief valve kit and screw set for critical units.
Allweiler SNF
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Three-screw pump
drive_type: Electric
installation: Marine oil service
Common Failures:
- • Mechanical seal leakage
- • Screw wear from contaminated fuel oil
- • Bearing damage from misalignment
- • Relief valve leakage causing reduced discharge pressure
Service: Maintain clean suction strainers and correct oil viscosity/temperature. Check coupling alignment after service. Overhaul if pressure or capacity drops.
Spares: Seal kit, screw set, bearings, relief valve parts and gaskets are recommended.
Allweiler NTT
Marine-rated, per Hersteller-Datenblatt
· Thermal oil
pump_type: Centrifugal pump
drive_type: Electric
installation: Thermal oil circulation
Common Failures:
- • Mechanical seal leakage from high-temperature operation
- • Bearing overheating
- • Casing gasket leakage
- • Cavitation damage from poor suction conditions
Service: Monitor bearing temperature and seal leakage. Check alignment after hot operation. Seal and bearing inspection according to thermal oil system PMS.
Spares: High-temperature mechanical seal, bearing set, casing gasket and coupling element should be stocked.
Allweiler NIT
Marine-rated, per Hersteller-Datenblatt
· Thermal oil/hot water
pump_type: Centrifugal pump
drive_type: Electric
installation: Heating system circulation
Common Failures:
- • Seal leakage after thermal cycling
- • Bearing wear from misalignment
- • Impeller/casing erosion
- • Coupling element deterioration from heat
Service: Check alignment at operating temperature. Monitor seal leakage and bearing temperature. Replace seals/bearings during planned overhaul.
Spares: Keep high-temperature seal, bearings, casing gasket and coupling insert.
Allweiler NB
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Impeller corrosion in seawater service
- • Bearing wear from coupling misalignment
- • Reduced flow due to worn wear rings
Service: Monitor pressure, seal leakage and vibration. Inspect impeller and casing during drydock or scheduled overhaul.
Spares: Mechanical seal, bearings, wear rings, shaft sleeve and casing gaskets are typical spares.
Allweiler NI
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Centrifugal pump
drive_type: Electric
installation: Marine general service
Common Failures:
- • Mechanical seal leakage
- • Impeller erosion/corrosion
- • Bearing overheating from poor lubrication
- • Cavitation damage under restricted suction
Service: Routine operational checks include discharge pressure, vibration and seal leakage. Overhaul during scheduled PMS or if performance deteriorates.
Spares: Stock seal kit, bearings, casing gasket, wear rings and shaft sleeve.
Allweiler AE
Marine-rated, per Hersteller-Datenblatt
· Wastewater/sludge/bilge
pump_type: Progressive cavity pump
drive_type: Electric
installation: Engine-room sludge/bilge service
Common Failures:
- • Stator wear from abrasive solids
- • Rotor corrosion or scoring
- • Mechanical seal leakage
- • Dry-running stator damage
Service: Never run dry. Flush after sludge or bilge service where required. Inspect stator/rotor condition during PMS or if flow decreases.
Spares: Stator, rotor, universal joint parts, mechanical seal and gasket set are critical spares.
Azcue Pumps CA
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Horizontal centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Impeller corrosion in seawater service
- • Bearing overheating from misalignment
- • Cavitation damage from restricted suction
Service: Check bearing temperature, vibration and seal leakage. Inspect impeller, wear rings and shaft sleeve during overhaul.
Spares: Mechanical seal, bearings, wear rings, shaft sleeve and gaskets are common spares.
Azcue Pumps MN
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Close-coupled centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Motor bearing wear
- • Impeller blockage/corrosion
- • Reduced flow due to suction strainer blockage
Service: Routine PMS: inspect seal leakage, motor current and discharge pressure. Clean suction strainer as required.
Spares: Mechanical seal, motor bearings, impeller, gasket kit and wear parts should be available.
Azcue Pumps MO
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Gear pump
drive_type: Electric
installation: Oil transfer
Common Failures:
- • Gear wear from contaminated oil
- • Shaft seal leakage
- • Pressure loss from worn bushings
- • Relief valve sticking
Service: Keep suction filters clean. Check discharge pressure and seal leakage. Inspect gears and bushings when pressure drops.
Spares: Seal kit, gear set, bushings, relief valve parts and gaskets are recommended.
Azcue Pumps BT-HM
Marine-rated, per Hersteller-Datenblatt
· Bilge/ballast/sea water
pump_type: Self-priming centrifugal pump
drive_type: Electric
installation: Marine bilge/ballast service
Common Failures:
- • Priming failure from suction air ingress
- • Mechanical seal leakage
- • Impeller wear from debris
- • Bearing wear from vibration
Service: Test priming performance periodically. Inspect suction side tightness and clean strainer. Overhaul mechanical seal and bearings according to PMS.
Spares: Mechanical seal, bearings, impeller, gasket set and priming components should be stocked.
Azcue Pumps VRX
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Vertical inline centrifugal pump
drive_type: Electric
installation: Marine cooling/general service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear
- • Impeller corrosion
- • Vibration from pipe strain
Service: Monitor vibration and leakage. Check pipe support to avoid casing strain. Inspect internal parts during scheduled service.
Spares: Seal kit, bearings, wear rings, shaft sleeve and gaskets are typical spares.
Blackmer NP
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/products/chemicals
pump_type: Sliding vane pump
drive_type: Electric
installation: Transfer service
Common Failures:
- • Vane wear causing capacity loss
- • Mechanical seal leakage
- • Rotor/casing wear from abrasives
- • Relief valve malfunction
Service: Monitor capacity and discharge pressure. Inspect vane wear at scheduled interval or capacity loss. Keep suction strainers clean.
Spares: Vane set, seal kit, bearings, relief valve parts and gasket kit are common spares.
Blackmer LGL
Marine-rated, per Hersteller-Datenblatt
· LPG/NH3/liquefied gases
pump_type: Sliding vane pump
drive_type: Electric
installation: Liquefied gas transfer
Common Failures:
- • Vane wear
- • Seal leakage
- • Vapor lock/cavitation damage
- • Bearing wear from poor lubrication conditions
Service: Check suction conditions and differential pressure. Inspect vanes and mechanical seal at scheduled interval or reduced capacity.
Spares: Vane set, mechanical seal, bearings, gaskets and relief valve parts should be stocked.
Bornemann SLH-4G
Marine-rated, per Hersteller-Datenblatt
· Crude oil/products/sludge
pump_type: Twin-screw pump
drive_type: Electric
installation: Cargo/stripping/transfer
Common Failures:
- • Mechanical seal leakage
- • Screw/casing wear from abrasive cargo or sludge
- • Timing gear wear
- • Bearing damage from excessive differential pressure
Service: Monitor vibration, temperature and differential pressure. Check seal leakage and gearbox oil. Overhaul screws, bearings and timing gears during planned service or performance loss.
Spares: Seal cartridge, bearing kits, timing gear parts, casing liners and gasket sets are critical.
Bornemann SLH-5G
Marine-rated, per Hersteller-Datenblatt
· Crude oil/products/sludge
pump_type: Twin-screw pump
drive_type: Electric
installation: Cargo/transfer service
Common Failures:
- • Seal leakage
- • Screw wear with abrasive cargo residues
- • Gearbox/timing gear wear
- • Bearing overheating
Service: Check differential pressure, vibration and gearbox oil condition. Inspect screw clearances and seals during major PMS or drydock.
Spares: Mechanical seals, bearings, timing gears, screw/casing wear parts and gasket kits are recommended.
Bornemann SLH-6G
Marine-rated, per Hersteller-Datenblatt
· Crude oil/products/sludge
pump_type: Twin-screw pump
drive_type: Electric
installation: Cargo/transfer service
Common Failures:
- • Screw flank wear
- • Mechanical seal leakage
- • Bearing wear from misalignment
- • Timing gear damage from overload
Service: Record pressure and vibration trends. Check gearbox lubrication. Major overhaul typically aligned with drydock or after abnormal noise/vibration.
Spares: Keep mechanical seals, bearings, timing gear set, casing liner/wear parts and gaskets.
DESMI Pumping Technology A/S NDB 125, NDB 150, NDB 200
Marine-rated, per Hersteller-Datenblatt
· Seawater / Freshwater / Oil
source: dnv-approval-finder
Common Failures:
- • Mechanische Gleitringdichtung Leckage nach 8.000-12.000 Betriebsstunden
- • Laufrad-Erosion durch Kavitation bei unzureichendem NPSH
- • Wellenlager-Verschleiß nach 15.000-20.000 Stunden
- • Kupplungs-Fluchtungsfehler verursacht Vibration und vorzeitigen Lagerverschleiß
Service: Gleitringdichtung alle 8.000-12.000 Stunden. Laufrad-Inspektion bei Dockung. Wellenlager alle 15.000-20.000 Stunden. Kupplungsfluchtung jährlich prüfen. Vibrationsmessung quartalsweise.
Spares: DESMI Pumping Technology A/S: Ersatzteile per Hersteller-Ersatzteilliste. Mechanische Dichtungen und Laufräder an Bord vorhalten. Lead time: 2-6 Wochen je nach Hersteller.
DESMI Pumping Technology A/S NDW150, NDW200, NDW250
Marine-rated, per Hersteller-Datenblatt
· Seawater / Freshwater / Oil
source: dnv-approval-finder
Common Failures:
- • Mechanische Gleitringdichtung Leckage nach 8.000-12.000 Betriebsstunden
- • Laufrad-Erosion durch Kavitation bei unzureichendem NPSH
- • Wellenlager-Verschleiß nach 15.000-20.000 Stunden
- • Kupplungs-Fluchtungsfehler verursacht Vibration und vorzeitigen Lagerverschleiß
Service: Gleitringdichtung alle 8.000-12.000 Stunden. Laufrad-Inspektion bei Dockung. Wellenlager alle 15.000-20.000 Stunden. Kupplungsfluchtung jährlich prüfen. Vibrationsmessung quartalsweise.
Spares: DESMI Pumping Technology A/S: Ersatzteile per Hersteller-Ersatzteilliste. Mechanische Dichtungen und Laufräder an Bord vorhalten. Lead time: 2-6 Wochen je nach Hersteller.
DESMI Pumping Technology A/S NDW150, NDW200, NDW250, NDW300
Marine-rated, per Hersteller-Datenblatt
· Seawater / Freshwater / Oil
source: dnv-approval-finder
Common Failures:
- • Mechanische Gleitringdichtung Leckage nach 8.000-12.000 Betriebsstunden
- • Laufrad-Erosion durch Kavitation bei unzureichendem NPSH
- • Wellenlager-Verschleiß nach 15.000-20.000 Stunden
- • Kupplungs-Fluchtungsfehler verursacht Vibration und vorzeitigen Lagerverschleiß
Service: Gleitringdichtung alle 8.000-12.000 Stunden. Laufrad-Inspektion bei Dockung. Wellenlager alle 15.000-20.000 Stunden. Kupplungsfluchtung jährlich prüfen. Vibrationsmessung quartalsweise.
Spares: DESMI Pumping Technology A/S: Ersatzteile per Hersteller-Ersatzteilliste. Mechanische Dichtungen und Laufräder an Bord vorhalten. Lead time: 2-6 Wochen je nach Hersteller.
DESMI RO-CLEAN A/S Winder Lifting plates, Winder Spreader bars
Marine-rated, per Hersteller-Datenblatt
· Seawater / Freshwater / Oil
source: dnv-approval-finder
Common Failures:
- • Mechanische Gleitringdichtung Leckage nach 8.000-12.000 Betriebsstunden
- • Laufrad-Erosion durch Kavitation bei unzureichendem NPSH
- • Wellenlager-Verschleiß nach 15.000-20.000 Stunden
- • Kupplungs-Fluchtungsfehler verursacht Vibration und vorzeitigen Lagerverschleiß
Service: Gleitringdichtung alle 8.000-12.000 Stunden. Laufrad-Inspektion bei Dockung. Wellenlager alle 15.000-20.000 Stunden. Kupplungsfluchtung jährlich prüfen. Vibrationsmessung quartalsweise.
Spares: DESMI RO-CLEAN A/S: Ersatzteile per Hersteller-Ersatzteilliste. Mechanische Dichtungen und Laufräder an Bord vorhalten. Lead time: 2-6 Wochen je nach Hersteller.
Desmi NSL
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water/cooling water
pump_type: Vertical in-line centrifugal pump
drive_type: Electric
installation: Engine-room service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear from misalignment or vibration
- • Impeller corrosion/erosion in seawater
- • Reduced capacity from worn wear rings
Service: Check seal leakage, bearing temperature and vibration during rounds. Inspect impeller and wear rings during planned overhaul.
Spares: Mechanical seal, bearings, wear rings, shaft sleeve and gasket kit are typical spares.
Desmi DSL
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water/cooling water
pump_type: Vertical in-line centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Seal leakage
- • Impeller wear from solids
- • Bearing noise/overheating
- • Casing corrosion in seawater service
Service: Monitor pressure, vibration and leakage. Maintain alignment and inspect internal parts during PMS or drydock.
Spares: Keep mechanical seal, bearings, casing gasket, wear rings and shaft sleeve.
Desmi SA
Marine-rated, per Hersteller-Datenblatt
· Bilge/ballast/general service
pump_type: Self-priming centrifugal pump
drive_type: Electric
installation: Marine general service
Common Failures:
- • Loss of priming from suction air leakage
- • Mechanical seal leakage
- • Impeller blockage by debris
- • Priming valve wear
Service: Test self-priming function periodically. Inspect suction tightness and clean strainers. Overhaul seal and priming components during PMS.
Spares: Mechanical seal, priming valve parts, impeller, wear ring and gasket kit should be available.
Desmi MODULAR S
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water/oil
pump_type: Centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear
- • Impeller erosion/corrosion
- • Vibration from coupling misalignment
Service: Check operating pressure, bearing temperature and vibration. Inspect mechanical seal and internal wear parts at planned service.
Spares: Mechanical seal, bearings, coupling elements, wear rings and gaskets are recommended.
Desmi ROTAN GP
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil/viscous liquids
pump_type: Internal gear pump
drive_type: Electric
installation: Transfer service
Common Failures:
- • Gear and casing wear from contaminated oil
- • Shaft seal leakage
- • Relief valve sticking
- • Capacity loss from internal clearance wear
Service: Check suction strainer, relief valve operation and seal leakage. Inspect gears and bushings during scheduled overhaul.
Spares: Seal kit, bushings, gear/idler set, relief valve parts and gasket kit are key spares.
Desmi ROTAN HD
Marine-rated, per Hersteller-Datenblatt
· Heavy fuel oil/lube oil/bitumen
pump_type: Internal gear pump
drive_type: Electric
installation: Heavy-duty transfer
Common Failures:
- • Bushing wear under high viscosity/high temperature service
- • Mechanical seal or packing leakage
- • Gear scoring from hard particles
- • Relief valve blockage
Service: Operate within viscosity/temperature limits. Monitor pressure and leakage. Inspect internal clearances during planned service.
Spares: Gear set, bushings, seal/packing kit, relief valve kit and gaskets are recommended.
Desmi Pumping Technology (Suzhou)Co.,Ltd 28K, 28L, 42K, 42L, 70L
Marine-rated, per Hersteller-Datenblatt
· Seawater / Freshwater / Oil
source: dnv-approval-finder
Common Failures:
- • Mechanische Gleitringdichtung Leckage nach 8.000-12.000 Betriebsstunden
- • Laufrad-Erosion durch Kavitation bei unzureichendem NPSH
- • Wellenlager-Verschleiß nach 15.000-20.000 Stunden
- • Kupplungs-Fluchtungsfehler verursacht Vibration und vorzeitigen Lagerverschleiß
Service: Gleitringdichtung alle 8.000-12.000 Stunden. Laufrad-Inspektion bei Dockung. Wellenlager alle 15.000-20.000 Stunden. Kupplungsfluchtung jährlich prüfen. Vibrationsmessung quartalsweise.
Spares: Desmi Pumping Technology (Suzhou)Co.,Ltd: Ersatzteile per Hersteller-Ersatzteilliste. Mechanische Dichtungen und Laufräder an Bord vorhalten. Lead time: 2-6 Wochen je nach Hersteller.
Desmi Pumping Technology (Suzhou)Co.,Ltd Fine-Fog TM
Marine-rated, per Hersteller-Datenblatt
· Seawater / Freshwater / Oil
source: dnv-approval-finder
Common Failures:
- • Mechanische Gleitringdichtung Leckage nach 8.000-12.000 Betriebsstunden
- • Laufrad-Erosion durch Kavitation bei unzureichendem NPSH
- • Wellenlager-Verschleiß nach 15.000-20.000 Stunden
- • Kupplungs-Fluchtungsfehler verursacht Vibration und vorzeitigen Lagerverschleiß
Service: Gleitringdichtung alle 8.000-12.000 Stunden. Laufrad-Inspektion bei Dockung. Wellenlager alle 15.000-20.000 Stunden. Kupplungsfluchtung jährlich prüfen. Vibrationsmessung quartalsweise.
Spares: Desmi Pumping Technology (Suzhou)Co.,Ltd: Ersatzteile per Hersteller-Ersatzteilliste. Mechanische Dichtungen und Laufräder an Bord vorhalten. Lead time: 2-6 Wochen je nach Hersteller.
Ebara 3M
Marine-rated, per Hersteller-Datenblatt
· Fresh water/sea water
pump_type: End-suction centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear
- • Impeller corrosion
- • Reduced capacity from wear ring wear
Service: Check leakage, pressure and vibration during operation. Inspect impeller, bearings and seals during PMS.
Spares: Mechanical seal, bearings, wear rings, shaft sleeve and gasket kit are recommended.
Ebara 3D
Marine-rated, per Hersteller-Datenblatt
· Fresh water/sea water
pump_type: Twin-impeller centrifugal pump
drive_type: Electric
installation: Pressure service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear
- • Cavitation damage
- • Stage/impeller wear
Service: Monitor suction pressure, discharge pressure and motor current. Replace seal and bearings according to PMS or condition.
Spares: Mechanical seal, bearings, impellers, O-rings and gaskets are typical spares.
Ebara EVMS
Marine-rated, per Hersteller-Datenblatt
· Fresh water/technical water
pump_type: Vertical multistage centrifugal pump
drive_type: Electric
installation: Pressure boosting/feed service
Common Failures:
- • Mechanical seal leakage
- • Stage wear from particles
- • Bearing wear
- • Cavitation from low inlet pressure
Service: Monitor inlet pressure, motor current and leakage. Inspect mechanical seal and stages during service.
Spares: Seal kit, bearings, stage components and O-ring kit are recommended.
Ebara DWO
Marine-rated, per Hersteller-Datenblatt
· Drainage/wastewater
pump_type: Open-impeller centrifugal pump
drive_type: Electric
installation: Drainage service
Common Failures:
- • Impeller blockage by solids
- • Mechanical seal leakage
- • Motor bearing wear
- • Reduced flow from casing/impeller wear
Service: Inspect and clean impeller when flow drops. Check seal leakage and motor current during PMS.
Spares: Mechanical seal, impeller, bearings, O-rings and gasket kit should be available.
Flowserve Durco Mark 3
Marine-rated, per Hersteller-Datenblatt
· Chemicals/water/process liquids
pump_type: ANSI centrifugal process pump
drive_type: Electric
installation: Process/service
Common Failures:
- • Mechanical seal leakage
- • Bearing housing overheating
- • Impeller corrosion/erosion
- • Vibration from cavitation or misalignment
Service: Monitor vibration, seal leakage and bearing temperature. Check coupling alignment after service. Inspect internals during scheduled overhaul.
Spares: Mechanical seal, bearing set, impeller, wear rings and gaskets are recommended.
Flowserve SIHI LPH
Marine-rated, per Hersteller-Datenblatt
· Condensate/hot water
pump_type: Side-channel pump
drive_type: Electric
installation: Boiler/condensate service
Common Failures:
- • Mechanical seal leakage
- • Stage wear from cavitation
- • Bearing wear
- • Low capacity from internal clearance wear
Service: Ensure adequate suction conditions and venting. Monitor pressure and seal leakage. Inspect stages during scheduled overhaul.
Spares: Mechanical seal, bearings, stage components, O-rings and gaskets should be available.
Flowserve SIHI ZTN
Marine-rated, per Hersteller-Datenblatt
· Thermal oil/hot liquids
pump_type: Centrifugal pump
drive_type: Electric
installation: Thermal oil service
Common Failures:
- • Mechanical seal leakage at high temperature
- • Bearing overheating
- • Casing gasket leakage
- • Coupling misalignment after thermal growth
Service: Check alignment under operating conditions. Monitor seal leakage and bearing temperature. Inspect seal/bearings during thermal oil system maintenance.
Spares: High-temperature mechanical seal, bearings, casing gasket and coupling components are recommended.
Framo SD100
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/chemicals
pump_type: Submerged hydraulically driven centrifugal cargo pump
drive_type: Hydraulic
installation: Tank submerged
Common Failures:
- • Cargo seal leakage detected through cofferdam
- • Hydraulic oil leakage into cofferdam
- • Wear ring clearance increase causing reduced head
- • Impeller erosion from abrasive cargo residues
Service: Cofferdam purging/check before and after each cargo operation. Hydraulic oil filter and cleanliness checks according to vessel PMS. Major inspection normally during drydock or on abnormal leakage/performance loss.
Spares: Keep cofferdam seal kits, wear rings, bearings, O-rings and hydraulic motor seal kits onboard.
Framo SD125
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/chemicals
pump_type: Submerged hydraulically driven centrifugal cargo pump
drive_type: Hydraulic
installation: Tank submerged
Common Failures:
- • Cargo seal leakage to cofferdam
- • Hydraulic seal leakage to cofferdam
- • Hydraulic motor performance loss from contaminated oil
- • Reduced capacity from impeller and wear ring erosion
Service: Cofferdam drain and leakage check before/after cargo discharge. Hydraulic pressure, return filter and oil temperature checked during operation. Major overhaul typically planned at drydock.
Spares: Maintain mechanical seal kit, hydraulic motor seal kit, wear rings, bearings and cofferdam drain components.
Framo SD150
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/chemicals
pump_type: Submerged hydraulically driven centrifugal cargo pump
drive_type: Hydraulic
installation: Tank submerged
Common Failures:
- • Cofferdam leakage from cargo-side seal wear
- • Hydraulic-side seal leakage
- • Impeller cavitation damage during poor suction conditions
- • Bearing damage after operation with contaminated hydraulic oil
Service: Cofferdam purging before and after each cargo operation. Record hydraulic pressure, discharge pressure and cargo stripping performance. Lift-out inspection normally during drydock.
Spares: Seal kits, bearing kits, wear rings, impeller fasteners and hydraulic motor repair kit are critical spares.
Framo SD200
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/products/chemicals
pump_type: Submerged hydraulically driven centrifugal cargo pump
drive_type: Hydraulic
installation: Tank submerged
Common Failures:
- • Mechanical seal leakage to cofferdam
- • Hydraulic motor internal leakage
- • Impeller erosion/corrosion from aggressive cargoes
- • Wear ring clearance increase causing low discharge pressure
Service: Cofferdam condition checked every cargo operation. Hydraulic oil sample/filter service according to PMS. Complete pump inspection usually aligned with drydock or abnormal leakage.
Spares: Keep complete seal set, hydraulic motor seal kit, bearings, wear rings, O-rings and cofferdam parts.
Framo SD250
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/products/chemicals
pump_type: Submerged hydraulically driven centrifugal cargo pump
drive_type: Hydraulic
installation: Tank submerged
Common Failures:
- • Cofferdam seal leakage
- • Hydraulic pressure instability from control valve faults
- • Bearing wear after hydraulic oil contamination
- • Head loss from impeller and wear ring erosion
Service: Check cofferdam leakage each cargo operation. Record hydraulic pressure, hydraulic oil temperature and discharge pressure. Major service normally at drydock or when leakage exceeds maker limits.
Spares: Critical spares include cofferdam seal kits, hydraulic motor repair kit, bearings, wear rings and hydraulic valve seal kits.
Framo STP
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/chemicals
pump_type: Submerged turbine cargo pump
drive_type: Hydraulic
installation: Tank submerged
Common Failures:
- • Cargo/hydraulic seal leakage through cofferdam
- • Hydraulic motor wear from poor oil cleanliness
- • Impeller cavitation damage
- • Bearing wear in pump stack
Service: Cofferdam purging and monitoring before and after cargo discharge. Hydraulic oil sampling and filter maintenance according to PMS. Lift-out inspection normally during drydock.
Spares: Maintain mechanical seal kits, bearings, wear rings, O-rings and hydraulic motor seal kit.
Framo TK80
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/chemicals/water
pump_type: Portable hydraulically driven submerged pump
drive_type: Hydraulic
installation: Portable/emergency
Common Failures:
- • Hydraulic hose leakage
- • Quick coupling damage
- • Mechanical seal leakage
- • Impeller blockage by tank debris
Service: Operational test according to vessel PMS. Flush after cargo use. Inspect hydraulic hoses, quick couplings and seal leakage after each use.
Spares: Keep hydraulic hose set, seal kit, O-rings, quick couplings, bearings and impeller fasteners.
Framo TK150
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/chemicals/water
pump_type: Portable hydraulically driven submerged pump
drive_type: Hydraulic
installation: Portable/emergency
Common Failures:
- • Hydraulic coupling leakage
- • Seal leakage after aggressive cargo exposure
- • Impeller erosion from solids
- • Bearing overheating after dry running
Service: Test run periodically under PMS. Flush thoroughly after use. Inspect hoses, couplings and seal chamber after each operation.
Spares: Keep seal kit, hydraulic hose/coupling set, bearing kit, wear components and O-ring kit onboard.
Grundfos CR
Marine-rated, per Hersteller-Datenblatt
· Fresh water/technical water
pump_type: Vertical multistage centrifugal pump
drive_type: Electric
installation: Pressure boosting/feed service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear in motor or pump
- • Stage wear from particles
- • Cavitation damage from insufficient inlet pressure
Service: Monitor inlet pressure, motor current and seal leakage. Replace seal and bearings according to PMS or leakage/noise.
Spares: Mechanical seal, chamber O-rings, bearings and stage components are common spares.
Grundfos CRE
Marine-rated, per Hersteller-Datenblatt
· Fresh water/technical water
pump_type: Vertical multistage centrifugal pump with speed control
drive_type: Electric variable speed
installation: Pressure boosting
Common Failures:
- • Mechanical seal leakage
- • VFD/electronics fault
- • Bearing wear
- • Low flow or pressure from stage wear
Service: Check pressure setpoints, motor current and alarm history. Inspect mechanical seal and bearings during service.
Spares: Mechanical seal, sensor, electronics/VFD module, bearings and O-ring kit are recommended.
Grundfos NB
Marine-rated, per Hersteller-Datenblatt
· Fresh water/sea water
pump_type: End-suction centrifugal pump
drive_type: Electric
installation: Marine water service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear from misalignment
- • Impeller wear/corrosion
- • Cavitation damage
Service: Check alignment, bearing temperature and seal leakage. Inspect impeller and wear rings during scheduled overhaul.
Spares: Mechanical seal, bearings, impeller, wear ring and gasket set are common spares.
Grundfos NK
Marine-rated, per Hersteller-Datenblatt
· Fresh water/sea water
pump_type: Long-coupled centrifugal pump
drive_type: Electric
installation: Marine water service
Common Failures:
- • Mechanical seal leakage
- • Coupling misalignment vibration
- • Bearing overheating
- • Impeller corrosion/erosion
Service: Check alignment after maintenance. Monitor vibration, bearing temperature and seal leakage. Overhaul according to PMS.
Spares: Mechanical seal, bearings, coupling insert, wear rings and gaskets are recommended.
Grundfos TP
Marine-rated, per Hersteller-Datenblatt
· Heating/cooling water
pump_type: Inline centrifugal pump
drive_type: Electric
installation: HVAC/technical water circulation
Common Failures:
- • Mechanical seal leakage
- • Motor bearing wear
- • Impeller fouling
- • Reduced flow from air locking
Service: Check pressure, motor current and leakage. Vent system where required. Replace seal/bearings during service.
Spares: Mechanical seal, motor bearings, O-rings and impeller are common spares.
IMO AB ACF
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil/hydraulic oil
pump_type: Three-screw pump
drive_type: Electric
installation: Engine-room oil service
Common Failures:
- • Screw set scoring from contaminated oil
- • Mechanical seal leakage
- • Relief valve sticking from sludge/varnish
- • Bearing wear after operation with low viscosity oil
Service: Clean suction strainers regularly. Check relief valve operation and seal leakage. Inspect screw set and bearings during scheduled overhaul or when flow/pressure drops.
Spares: Keep mechanical seal, bearing kit, gasket set, relief valve parts and complete screw set for critical fuel/lube duties.
IMO AB ACE
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Three-screw pump
drive_type: Electric
installation: Engine-room oil service
Common Failures:
- • Rotor/screw scoring from cat fines or dirt
- • Seal leakage
- • Pressure loss due to internal wear
- • Relief valve leakage causing low discharge pressure
Service: Monitor suction vacuum, discharge pressure and pump noise. Maintain clean filters/strainers. Overhaul when pressure cannot be maintained or abnormal noise appears.
Spares: Mechanical seal, gasket set, relief valve kit, bearings and screw set are critical spares.
IMO AB ACG
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Three-screw pump
drive_type: Electric
installation: Engine-room oil service
Common Failures:
- • Screw wear from abrasive particles
- • Mechanical seal leakage
- • Bearing damage from dry running or cavitation
- • Low pressure from relief valve malfunction
Service: Avoid dry running. Maintain suction head and clean strainers. Inspect screws and bearings at scheduled overhaul.
Spares: Stock seal kit, bearing kit, gasket kit, relief valve parts and screw set.
IMO AB LPD
Marine-rated, per Hersteller-Datenblatt
· Lube oil/fuel oil
pump_type: Three-screw pump
drive_type: Electric
installation: Engine-room oil service
Common Failures:
- • Low delivery pressure from screw wear
- • Mechanical seal leakage
- • Noise and vibration from cavitation
- • Bearing wear due to low oil viscosity
Service: Check pump pressure and noise during operation. Clean suction strainer and inspect relief valve. Overhaul on low pressure or abnormal vibration.
Spares: Mechanical seal, screws, bearings, gaskets and relief valve kit should be kept for essential oil service.
IMO AB LPQ
Marine-rated, per Hersteller-Datenblatt
· Lube oil/fuel oil
pump_type: Three-screw pump
drive_type: Electric
installation: Engine-room oil service
Common Failures:
- • Mechanical seal leakage
- • Internal leakage from worn screws
- • Cavitation damage from blocked suction strainer
- • Bearing wear from oil contamination
Service: Routine checks: suction strainer, discharge pressure, seal leakage and pump noise. Internal inspection during planned maintenance or performance loss.
Spares: Seal kit, bearing kit, relief valve kit, gasket set and screw set are recommended critical spares.
ITT Goulds Pumps 3196
Marine-rated, per Hersteller-Datenblatt
· Water/chemicals/process liquids
pump_type: End-suction centrifugal process pump
drive_type: Electric
installation: Process/service
Common Failures:
- • Mechanical seal leakage
- • Bearing failure from misalignment or cavitation
- • Impeller erosion/corrosion
- • Casing gasket leakage
Service: Monitor vibration, bearing temperature and seal leakage. Check alignment after maintenance. Inspect wetted parts during scheduled overhaul.
Spares: Mechanical seal, bearings, impeller, casing gasket and wear rings are recommended.
ITT Goulds Pumps IC
Marine-rated, per Hersteller-Datenblatt
· Water/process liquids
pump_type: ISO centrifugal process pump
drive_type: Electric
installation: Process/service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear
- • Impeller erosion/corrosion
- • Reduced head from wear ring clearance
Service: Check vibration, leakage and pressure. Inspect mechanical seal and bearings according to PMS.
Spares: Seal kit, bearing set, impeller, wear rings and casing gaskets are typical spares.
Iron Pump CN
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Impeller corrosion/erosion
- • Bearing overheating
- • Cavitation damage from poor suction condition
Service: Monitor suction/discharge pressure, seal leakage and bearing temperature. Inspect impeller and wear rings at overhaul.
Spares: Mechanical seal, bearings, wear rings, shaft sleeve and gasket kit are key spares.
Iron Pump CVL
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Vertical inline centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Motor bearing failure
- • Impeller corrosion in seawater
- • Reduced capacity from wear ring wear
Service: Routine PMS: inspect seal leakage, vibration, motor current and pressure. Internal inspection during scheduled overhaul.
Spares: Seal kit, bearings, wear rings, impeller and casing gaskets are recommended.
Iron Pump CG
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Gear pump
drive_type: Electric
installation: Oil transfer
Common Failures:
- • Gear wear from dirty oil
- • Shaft seal leakage
- • Pressure loss due to worn bushings
- • Relief valve sticking
Service: Clean suction filters regularly. Monitor discharge pressure and leakage. Inspect gears/bushings at service or when performance drops.
Spares: Seal kit, gear set, bushings, relief valve kit and gaskets are recommended.
Johnson Pump FIP
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water/bilge
pump_type: Flexible impeller pump
drive_type: Electric or engine-driven
installation: Marine auxiliary service
Common Failures:
- • Flexible impeller vane cracking or loss
- • Seal leakage
- • Cam wear reducing capacity
- • Impeller damage after dry running
Service: Inspect/replace flexible impeller at least annually or according to running hours. Never run dry. Check seal leakage and cover plate wear.
Spares: Flexible impeller kit, mechanical seal, cover gasket, cam and cover plate should be stocked.
Johnson Pump F7B
Marine-rated, per Hersteller-Datenblatt
· Sea water
pump_type: Flexible impeller pump
drive_type: Engine-driven or belt-driven
installation: Cooling water service
Common Failures:
- • Impeller vane breakage
- • Lip seal leakage
- • Shaft wear at seal area
- • Cover plate scoring
Service: Replace rubber impeller seasonally or at PMS interval. Inspect cover/cam and seal during impeller change.
Spares: Impeller kit, seal kit, cover gasket, cam and shaft parts are typical spares.
Johnson Pump F8B
Marine-rated, per Hersteller-Datenblatt
· Sea water
pump_type: Flexible impeller pump
drive_type: Engine-driven or belt-driven
installation: Cooling water service
Common Failures:
- • Flexible impeller degradation
- • Seal leakage
- • Bearing wear
- • Reduced flow from worn cam/cover plate
Service: Annual or running-hour based impeller replacement. Check for dry-run damage and seal leakage at each service.
Spares: Flexible impeller, mechanical seal, bearing, cam, gasket and cover plate are recommended.
Johnson Pump F9B
Marine-rated, per Hersteller-Datenblatt
· Sea water
pump_type: Flexible impeller pump
drive_type: Engine-driven or belt-driven
installation: Cooling water service
Common Failures:
- • Impeller vane failure
- • Seal leakage and salt deposits
- • Shaft groove wear
- • Bearing noise
Service: Replace impeller at scheduled intervals and inspect for missing vanes. Flush seawater side if vessel laid up.
Spares: Impeller kit, seal kit, bearings, cover gasket and cam should be kept.
Johnson Pump CombiBloc
Marine-rated, per Hersteller-Datenblatt
· Fresh water/sea water/process water
pump_type: Close-coupled centrifugal pump
drive_type: Electric
installation: Marine and industrial service
Common Failures:
- • Mechanical seal leakage
- • Motor bearing wear
- • Impeller corrosion/erosion
- • Reduced capacity from wear ring wear
Service: Monitor motor current, pressure and seal leakage. Inspect seal and bearing condition during PMS.
Spares: Mechanical seal, motor bearings, impeller, wear ring and gasket kit are typical spares.
Johnson Pump CombiNorm
Marine-rated, per Hersteller-Datenblatt
· Fresh water/sea water
pump_type: End-suction centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear from misalignment
- • Impeller cavitation damage
- • Casing corrosion in seawater applications
Service: Check coupling alignment, vibration and leakage. Inspect wear rings, shaft sleeve and bearings during overhaul.
Spares: Mechanical seal, bearing kit, shaft sleeve, wear rings and casing gasket are standard spares.
KSB Etanorm
Marine-rated, per Hersteller-Datenblatt
· Fresh water/sea water/technical water
pump_type: End-suction centrifugal pump
drive_type: Electric
installation: General service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear from misalignment
- • Impeller erosion/corrosion
- • Wear ring clearance increase
Service: Check alignment, vibration and leakage. Inspect impeller, wear rings and bearings during scheduled overhaul.
Spares: Mechanical seal, bearings, wear rings, shaft sleeve and casing gasket are common spares.
KSB Etaline
Marine-rated, per Hersteller-Datenblatt
· Heating/cooling water
pump_type: Inline centrifugal pump
drive_type: Electric
installation: HVAC/technical water
Common Failures:
- • Mechanical seal leakage
- • Motor bearing wear
- • Impeller fouling
- • Vibration from pipe strain
Service: Monitor leakage, vibration and motor current. Check pipe support. Replace seal and bearings according to PMS.
Spares: Mechanical seal, bearings, gasket kit and impeller are recommended.
KSB Movitec
Marine-rated, per Hersteller-Datenblatt
· Fresh water/technical water
pump_type: Vertical multistage centrifugal pump
drive_type: Electric
installation: Pressure boosting/feed service
Common Failures:
- • Mechanical seal leakage
- • Stage wear from particles
- • Bearing wear
- • Cavitation from insufficient suction pressure
Service: Check inlet pressure, discharge pressure, motor current and leakage. Inspect seal, bearings and stages during service.
Spares: Seal kit, O-rings, bearings and hydraulic stage components should be kept.
Kral K Series
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Three-screw pump
drive_type: Electric
installation: Engine-room oil service
Common Failures:
- • Screw wear from contaminated fuel oil
- • Mechanical seal leakage
- • Bearing wear due to poor lubrication
- • Relief valve malfunction causing pressure instability
Service: Maintain clean suction strainers and correct viscosity. Check pressure, noise and seal leakage. Overhaul when pressure or capacity drops.
Spares: Seal kit, bearing kit, gaskets, relief valve parts and screw set are recommended spares.
Kral L Series
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Three-screw pump
drive_type: Electric
installation: Marine oil service
Common Failures:
- • Mechanical seal leakage
- • Internal leakage from screw wear
- • Cavitation from blocked suction filter
- • Bearing damage from misalignment
Service: Check suction filter, discharge pressure and temperature. Inspect coupling alignment after motor/pump service. Overhaul on abnormal noise or performance loss.
Spares: Mechanical seal, screws, bearings, gasket kit and pressure valve components should be stocked.
Kral C Series
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Three-screw pump
drive_type: Electric
installation: Compact oil service
Common Failures:
- • Seal leakage
- • Screw scoring due to dirty oil
- • Pressure loss from worn screw set
- • Relief valve sticking
Service: Monitor pressure and pump noise. Clean strainers and check seal leakage during PMS. Replace screw set if internal leakage is excessive.
Spares: Seal kit, gasket kit, screw set and valve parts are key spares.
Kral D Series
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Three-screw pump
drive_type: Electric
installation: Marine oil service
Common Failures:
- • Mechanical seal leakage
- • Rotor/screw damage after dry running
- • Low pressure from internal wear
- • Bearing wear from contaminated oil
Service: Avoid dry running. Verify suction pressure and strainer cleanliness. Inspect internal set when flow or pressure declines.
Spares: Keep seal kit, bearing kit, screw set, valve kit and gaskets.
Leistritz L2NG
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Twin-screw pump
drive_type: Electric
installation: Oil transfer/booster service
Common Failures:
- • Screw and liner scoring from contaminants
- • Mechanical seal leakage
- • Timing gear wear or backlash issues
- • Bearing wear from misalignment
Service: Monitor suction pressure, vibration and seal leakage. Check timing gear condition during overhaul. Maintain filter cleanliness.
Spares: Seal kits, bearings, timing gear parts, gaskets and screw set are critical spares.
Leistritz L3MF
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Three-screw pump
drive_type: Electric
installation: Marine oil service
Common Failures:
- • Screw set wear from dirty oil
- • Mechanical seal leakage
- • Bearing wear from cavitation or low viscosity
- • Relief valve malfunction
Service: Check discharge pressure and suction strainer. Inspect screws and bearings during scheduled overhaul or when performance drops.
Spares: Mechanical seal, bearings, gaskets, valve parts and screw set are recommended.
Leistritz L3MG
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Three-screw pump
drive_type: Electric
installation: Oil circulation and transfer
Common Failures:
- • Mechanical seal leakage
- • Screw wear due to abrasive contamination
- • Noise from cavitation
- • Pressure loss from internal wear
Service: Maintain suction condition and oil cleanliness. Check noise, pressure and seal leakage during rounds. Overhaul when internal leakage increases.
Spares: Keep seal kit, bearing kit, screw set, relief valve parts and gasket kit.
Mono Pumps Epsilon
Marine-rated, per Hersteller-Datenblatt
· Sludge/wastewater/viscous liquids
pump_type: Progressive cavity pump
drive_type: Electric
installation: Sludge/waste transfer
Common Failures:
- • Stator wear from solids
- • Rotor wear/corrosion
- • Mechanical seal leakage
- • Drive joint wear
Service: Avoid dry running. Monitor discharge pressure and capacity. Inspect rotor/stator during planned maintenance or on reduced flow.
Spares: Stator, rotor, joint kit, seal kit and drive-end bearings are typical spares.
Naniwa Pump DBH
Marine-rated, per Hersteller-Datenblatt
· Ballast/bilge/sea water
pump_type: Centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Impeller corrosion/erosion
- • Bearing wear
- • Reduced capacity from wear ring clearance
Service: Check pressure, bearing temperature and seal leakage. Inspect impeller/wear rings during drydock or planned overhaul.
Spares: Mechanical seal, bearings, wear rings, shaft sleeve and casing gasket should be kept.
Naniwa Pump DRV
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Vertical centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Line shaft bearing wear
- • Mechanical seal leakage
- • Impeller corrosion
- • Vibration from shaft misalignment
Service: Monitor vibration, leakage and discharge pressure. Inspect bearings and hydraulic parts during overhaul.
Spares: Seal kit, line shaft bearings, wear rings, shaft sleeve and gaskets are common spares.
Naniwa Pump HVC
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Horizontal centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Bearing overheating
- • Impeller corrosion/erosion
- • Cavitation due to suction restriction
Service: Check suction strainer, discharge pressure and bearing temperature. Inspect seals and bearings during PMS.
Spares: Mechanical seal, bearings, wear rings, impeller and casing gasket should be stocked.
Naniwa Pump GV
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Gear pump
drive_type: Electric
installation: Oil transfer
Common Failures:
- • Gear scoring from contaminated oil
- • Shaft seal leakage
- • Relief valve sticking
- • Pressure loss from bushing wear
Service: Maintain clean suction strainer and correct oil temperature/viscosity. Inspect gears and relief valve during overhaul.
Spares: Seal kit, gear set, bushings, relief valve parts and gaskets are critical spares.
Netzsch NEMO NM
0.5-10 m³/h @ 6 bar
· 2.2 kW
· Sludge/wastewater/viscous liquids
· Progressive Cavity
pump_type: Progressive cavity pump
drive_type: Electric
installation: Sludge/waste transfer
Common Failures:
- • Stator wear from abrasive solids
- • Rotor scoring/corrosion
- • Mechanical seal leakage
- • Universal joint wear
Service: Avoid dry running. Monitor discharge pressure and flow. Inspect rotor/stator and joints when flow drops or pressure rises.
Spares: Stator, rotor, mechanical seal, joint kit and elastomer components are critical spares.
Netzsch NEMO BY
Marine-rated, per Hersteller-Datenblatt
· Sludge/wastewater/viscous liquids
pump_type: Progressive cavity pump
drive_type: Electric
installation: Sludge/waste transfer
Common Failures:
- • Stator damage from dry running
- • Rotor/stator wear
- • Seal leakage
- • Joint boot failure
Service: Protect against dry running. Flush if medium hardens. Inspect rotor/stator and joint assembly during PMS.
Spares: Stator, rotor, seal kit, joint kit, drive-end bearings and gaskets are recommended.
SPX FLOW CombiPro
Marine-rated, per Hersteller-Datenblatt
· Water/oil/process liquids
pump_type: Heavy-duty centrifugal process pump
drive_type: Electric
installation: Marine/industrial service
Common Failures:
- • Mechanical seal leakage
- • Bearing housing overheating
- • Impeller erosion/corrosion
- • Vibration from coupling misalignment or cavitation
Service: Monitor vibration, bearing temperature and seal leakage. Check alignment after maintenance. Inspect internals during scheduled overhaul.
Spares: Mechanical seal, bearing set, wear rings, shaft sleeve and casing gaskets are recommended.
SPX FLOW CombiChem
Marine-rated, per Hersteller-Datenblatt
· Chemicals/water/process liquids
pump_type: Centrifugal process pump
drive_type: Electric
installation: Chemical/process service
Common Failures:
- • Mechanical seal leakage with aggressive liquids
- • Impeller corrosion
- • Bearing wear
- • Casing gasket leakage
Service: Verify material compatibility with liquid. Monitor seal leakage and vibration. Inspect wetted parts during planned service.
Spares: Seal kit, bearing set, casing gasket, impeller and shaft sleeve should match liquid compatibility.
SPX FLOW TopGear GM
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil/viscous liquids
pump_type: Internal gear pump
drive_type: Electric
installation: Transfer service
Common Failures:
- • Gear and bushing wear from dirty oil
- • Mechanical seal leakage
- • Relief valve sticking
- • Loss of capacity due to increased internal clearances
Service: Maintain suction filter cleanliness and check relief valve function. Inspect gears, bushings and seal at overhaul.
Spares: Seal kit, gear/idler set, bushings, relief valve kit and gaskets are key spares.
SPX FLOW TopGear H
Marine-rated, per Hersteller-Datenblatt
· Heavy fuel oil/viscous liquids
pump_type: Internal gear pump
drive_type: Electric
installation: Heavy-duty transfer
Common Failures:
- • Bushing wear under high viscosity service
- • Seal leakage at elevated temperature
- • Gear scoring from hard particles
- • Relief valve contamination
Service: Operate within viscosity and temperature limits. Monitor pressure and leakage. Inspect clearances during scheduled overhaul.
Spares: Gear set, bushings, mechanical seal, relief valve kit and high-temperature gaskets are recommended.
Seepex BN
Marine-rated, per Hersteller-Datenblatt
· Sludge/wastewater/viscous liquids
pump_type: Progressive cavity pump
drive_type: Electric
installation: Sludge/waste transfer
Common Failures:
- • Stator wear from abrasive solids
- • Rotor scoring
- • Mechanical seal leakage
- • Joint wear and vibration
Service: Avoid dry running and monitor discharge pressure. Inspect rotor/stator when delivery decreases. Service joints according to PMS.
Spares: Stator, rotor, mechanical seal, joint kit and coupling parts are key spares.
Seepex MD
Marine-rated, per Hersteller-Datenblatt
· Metered chemicals/sludge/polymer
pump_type: Progressive cavity metering pump
drive_type: Electric
installation: Dosing/metering
Common Failures:
- • Stator wear causing dosing inaccuracy
- • Rotor corrosion
- • Seal leakage
- • Dry-running stator damage
Service: Calibrate dosing rate according to process requirements. Avoid dry running. Inspect rotor/stator and seal at PMS interval.
Spares: Stator, rotor, seal kit, calibration-related accessories and joint parts are recommended.
Shinko Industries KV
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/ballast/water
pump_type: Vertical centrifugal pump
drive_type: Electric or steam turbine
installation: Marine cargo/engine-room service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear from misalignment or poor lubrication
- • Impeller erosion/corrosion
- • Casing wear at wear ring areas
Service: Check bearing temperature, vibration and seal leakage during operation. Bearing lubricant replacement and coupling alignment according to PMS. Internal inspection normally during drydock.
Spares: Keep mechanical seal, bearings, wear rings, shaft sleeve and casing gasket set.
Shinko Industries KVB
Marine-rated, per Hersteller-Datenblatt
· Ballast/sea water/cargo service
pump_type: Vertical centrifugal pump
drive_type: Electric
installation: Engine room or pump room
Common Failures:
- • Wear ring erosion
- • Mechanical seal leakage
- • Shaft sleeve wear
- • Bearing overheating from poor lubrication
Service: Inspect leakage, vibration and bearing temperature during operation. Open casing for impeller/wear ring inspection during drydock or if performance drops.
Spares: Mechanical seal, shaft sleeve, bearings, wear rings and casing gaskets are typical onboard spares.
Shinko Industries HVC
Marine-rated, per Hersteller-Datenblatt
· Sea water/ballast/cooling water
pump_type: Horizontal centrifugal pump
drive_type: Electric
installation: Engine room service
Common Failures:
- • Mechanical seal leakage
- • Impeller erosion from seawater solids
- • Bearing failure from coupling misalignment
- • Corrosion of casing internals
Service: Check suction/discharge pressure, bearing temperature and vibration during operation. Coupling alignment after motor or pump overhaul.
Spares: Stock mechanical seal, bearings, wear rings, impeller nut, shaft sleeve and gasket set.
Shinko Industries SVC
Marine-rated, per Hersteller-Datenblatt
· Sea water/ballast
pump_type: Self-priming centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Priming failure from air leakage on suction side
- • Mechanical seal leakage
- • Impeller wear from suspended solids
- • Priming valve malfunction
Service: Check priming performance and suction tightness regularly. Inspect seal and wear parts during scheduled overhaul.
Spares: Stock mechanical seal, priming valve parts, wear rings, bearings and gaskets.
Sulzer AHLSTAR A
Marine-rated, per Hersteller-Datenblatt
· Water/process liquids
pump_type: End-suction centrifugal pump
drive_type: Electric
installation: Marine/industrial service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear
- • Impeller erosion/corrosion
- • Cavitation damage
Service: Monitor vibration, bearing temperature and seal leakage. Inspect hydraulic components during scheduled service.
Spares: Mechanical seal, bearings, impeller, wear rings and casing gaskets are common spares.
Sulzer AHLSTAR W
Marine-rated, per Hersteller-Datenblatt
· Water/process liquids
pump_type: Centrifugal pump
drive_type: Electric
installation: Marine/industrial water service
Common Failures:
- • Mechanical seal leakage
- • Impeller/casing corrosion
- • Bearing overheating
- • Reduced head from wear ring clearance
Service: Check pressure, vibration and leakage. Inspect wear rings, shaft sleeve and bearings during overhaul.
Spares: Mechanical seal, bearing set, wear rings, shaft sleeve and gasket kit are recommended.
Sulzer SNS
Marine-rated, per Hersteller-Datenblatt
· Water/process liquids
pump_type: End-suction centrifugal pump
drive_type: Electric
installation: General water/process service
Common Failures:
- • Mechanical seal leakage
- • Bearing wear from misalignment
- • Impeller cavitation erosion
- • Wear ring wear causing reduced efficiency
Service: Monitor vibration and bearing temperature. Verify alignment after maintenance. Inspect seal and hydraulic components at planned intervals.
Spares: Mechanical seal, bearings, wear rings, shaft sleeve and casing gaskets are typical spares.
Sulzer SMD
Marine-rated, per Hersteller-Datenblatt
· Cooling water/sea water
pump_type: Axially split centrifugal pump
drive_type: Electric
installation: High-flow water service
Common Failures:
- • Mechanical seal or gland leakage
- • Bearing overheating
- • Impeller erosion/corrosion
- • Casing split joint leakage
Service: Monitor bearing temperature, vibration and leakage. Check alignment and inspect internals at major overhaul/drydock.
Spares: Bearings, seals/packing, wear rings, casing joint gasket and coupling parts are critical spares.
Svanehøj DW200
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/chemicals
pump_type: Vertical deepwell centrifugal cargo pump
drive_type: Electric
installation: Deck-mounted motor with pump column in tank
Common Failures:
- • Mechanical seal leakage at deck seal arrangement
- • Line shaft bearing wear
- • Shaft vibration from bearing wear or misalignment
- • Impeller erosion/corrosion
Service: Check seal leakage, vibration and discharge pressure during cargo operations. Inspect line shaft bearings and shaft alignment during drydock.
Spares: Keep deck seal kit, line shaft bearings, wear rings, O-rings and shaft coupling parts.
Svanehøj DW250
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/chemicals
pump_type: Vertical deepwell centrifugal cargo pump
drive_type: Electric
installation: Deck-mounted motor with pump column in tank
Common Failures:
- • Deck seal leakage
- • Intermediate bearing wear
- • Wear ring clearance increase
- • Vibration from shaft alignment or bearing wear
Service: Routine checks during discharge: vibration, seal leakage and discharge pressure. Shaft bearings and seal arrangement inspected at drydock.
Spares: Maintain deck seal kit, intermediate bearing set, wear rings, O-rings and coupling elements.
Svanehøj DW300
Marine-rated, per Hersteller-Datenblatt
· Cargo oil/chemicals
pump_type: Vertical deepwell centrifugal cargo pump
drive_type: Electric
installation: Deck-mounted motor with pump column in tank
Common Failures:
- • Mechanical seal leakage
- • Shaft bearing wear
- • Impeller cavitation erosion
- • Column pipe corrosion from aggressive cargoes
Service: Check seal leakage and vibration during cargo operation. Major pump column and shaft bearing inspection normally at drydock.
Spares: Seal sets, line shaft bearings, wear rings, impeller fasteners and coupling parts are critical spares.
Svanehøj ECA Fuel Pump
Marine-rated, per Hersteller-Datenblatt
· LNG/LPG/low-flashpoint fuel
pump_type: Cryogenic deepwell fuel pump
drive_type: Electric
installation: Tank-mounted
Common Failures:
- • Cryogenic seal leakage
- • Bearing wear from poor cooldown or operation outside envelope
- • Vibration due to thermal distortion
- • Reduced flow from vapor formation
Service: Cooldown and warm-up procedures according to maker instructions. Monitor vibration, motor current and differential pressure during operation. Major inspection during gas system service/drydock.
Spares: Critical spares include cryogenic seal kits, bearing parts, compatible O-rings and instrumentation sensors.
Taiko Kikai Industries DS
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Impeller corrosion in seawater
- • Bearing wear
- • Cavitation damage
Service: Monitor pressure, vibration and seal leakage. Inspect impeller/wear rings and bearings during planned overhaul.
Spares: Mechanical seal, bearing set, wear rings, shaft sleeve and gasket kit are recommended.
Taiko Kikai Industries HD
Marine-rated, per Hersteller-Datenblatt
· Sea water/ballast
pump_type: Horizontal centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Mechanical seal leakage
- • Bearing overheating
- • Impeller erosion/corrosion
- • Reduced capacity from wear ring wear
Service: Check bearing temperature, discharge pressure and vibration. Inspect internal wear parts during PMS.
Spares: Mechanical seal, bearings, wear rings, shaft sleeve and casing gasket are common spares.
Taiko Kikai Industries VHS
Marine-rated, per Hersteller-Datenblatt
· Sea water/fresh water
pump_type: Vertical centrifugal pump
drive_type: Electric
installation: Marine service
Common Failures:
- • Line shaft bearing wear
- • Mechanical seal leakage
- • Impeller corrosion
- • Shaft vibration
Service: Monitor vibration, pressure and leakage. Inspect shaft bearings, seal and hydraulic components during scheduled overhaul.
Spares: Seal kit, bearings, wear rings, shaft sleeve and gaskets should be stocked.
Taiko Kikai Industries SVG
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil
pump_type: Gear pump
drive_type: Electric
installation: Oil transfer
Common Failures:
- • Gear wear from dirty oil
- • Shaft seal leakage
- • Relief valve sticking
- • Bushing wear causing low pressure
Service: Keep suction filter clean and monitor pressure. Inspect gears and bushings when delivery drops.
Spares: Seal kit, gear set, bushings, relief valve kit and gasket set are recommended.
Teikoku Electric Mfg. R Series
Marine-rated, per Hersteller-Datenblatt
· Chemicals/oil/water
pump_type: Canned motor pump
drive_type: Electric canned motor
seal_type: Sealless
Common Failures:
- • Sleeve bearing wear from poor liquid lubrication
- • Stator liner corrosion/perforation
- • Rotor can damage from dry running
- • Reduced performance from internal recirculation wear
Service: Monitor motor current, temperature and differential pressure. Avoid dry running. Bearing and liner inspection during planned overhaul or abnormal noise/current.
Spares: Critical spares include sleeve bearings, thrust bearing parts, gaskets, rotor/stator can components and terminal box seals.
Teikoku Electric Mfg. N Series
Marine-rated, per Hersteller-Datenblatt
· Chemicals/oil/water
pump_type: Canned motor pump
drive_type: Electric canned motor
seal_type: Sealless
Common Failures:
- • Bearing wear due to operation outside flow range
- • Rotor rubbing after bearing deterioration
- • Canned motor insulation failure after liquid ingress
- • Internal corrosion from incompatible medium
Service: Check motor current and temperature trend. Maintain minimum flow and avoid vapor locking. Overhaul according to maker PMS or abnormal current/vibration.
Spares: Keep bearing set, gaskets, O-rings, terminal box seals and motor protection sensors.
Teikoku Electric Mfg. F Series
Marine-rated, per Hersteller-Datenblatt
· Low-temperature liquids/LPG/chemicals
pump_type: Canned motor pump
drive_type: Electric canned motor
seal_type: Sealless
Common Failures:
- • Thermal shock damage during improper cooldown
- • Sleeve bearing wear
- • Rotor can contact from bearing failure
- • Insulation degradation from abnormal temperature
Service: Follow controlled cooldown/warm-up. Monitor motor current and bearing condition indicators if fitted. Inspect internals during planned gas plant overhaul.
Spares: Stock low-temperature compatible bearing parts, gaskets, O-rings and electrical terminal seals.
Tsurumi Pump KRS
Marine-rated, per Hersteller-Datenblatt
· Drainage/bilge/dirty water
pump_type: Submersible drainage pump
drive_type: Electric
installation: Portable/submersible
Common Failures:
- • Mechanical seal leakage into oil chamber
- • Impeller wear from sand/solids
- • Cable entry water ingress
- • Motor insulation failure after seal failure
Service: Inspect oil chamber and mechanical seal according to PMS. Clean strainer and impeller after use in dirty water. Test insulation resistance periodically.
Spares: Mechanical seal, impeller, cable gland, O-rings and bearing set are recommended.
Tsurumi Pump KTZ
Marine-rated, per Hersteller-Datenblatt
· Drainage/bilge/dirty water
pump_type: Submersible drainage pump
drive_type: Electric
installation: Portable/submersible
Common Failures:
- • Impeller wear from sand
- • Mechanical seal leakage
- • Cable damage/water ingress
- • Motor overheating from blocked strainer
Service: Clean strainer and impeller after dirty-water use. Check insulation resistance and oil chamber condition periodically.
Spares: Mechanical seal, impeller, cable assembly, bearings and O-rings are key spares.
Verder Verderflex Dura
Marine-rated, per Hersteller-Datenblatt
· Chemicals/sludge/abrasive liquids
pump_type: Peristaltic hose pump
drive_type: Electric
installation: Dosing/transfer
Common Failures:
- • Hose fatigue rupture
- • Roller/shoe wear
- • Gearbox oil leakage
- • Reduced flow from hose compression loss
Service: Replace hose at running-hour or condition-based interval. Inspect lubricant level and hose condition regularly. Flush after chemical service if required.
Spares: Pump hose, lubricant, shoe/roller parts, gearbox seals and hose clamps are critical spares.
Viking Pump Universal Seal
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil/viscous liquids
pump_type: Internal gear pump
drive_type: Electric
installation: Transfer service
Common Failures:
- • Bushing wear
- • Mechanical seal leakage
- • Gear/idler wear from contaminated liquid
- • Relief valve sticking
Service: Maintain clean suction strainers and check relief valve. Inspect bushings and gears when capacity drops.
Spares: Seal kit, idler/gear set, bushings, relief valve parts and gaskets are recommended.
Viking Pump 4124A
Marine-rated, per Hersteller-Datenblatt
· Fuel oil/lube oil/viscous liquids
pump_type: Internal gear pump
drive_type: Electric
installation: Transfer service
Common Failures:
- • Seal leakage
- • Idler bushing wear
- • Gear wear from solids
- • Relief valve malfunction
Service: Check discharge pressure and leakage. Inspect gear/idler clearances and relief valve during overhaul.
Spares: Mechanical seal, idler bushing, gear/idler set, gaskets and relief valve parts should be kept.
Watson-Marlow Bredel 40
Marine-rated, per Hersteller-Datenblatt
· Chemicals/sludge/abrasive liquids
pump_type: Peristaltic hose pump
drive_type: Electric
installation: Dosing/transfer
Common Failures:
- • Hose fatigue and rupture
- • Shoe wear
- • Lubricant contamination after hose failure
- • Reduced capacity from hose wear
Service: Inspect hose condition and lubricant level regularly. Replace hose according to PMS or before fatigue failure in critical service.
Spares: Hose, lubricant, shoe set, gasket kit and leak detector parts are recommended.
Watson-Marlow Bredel 50
Marine-rated, per Hersteller-Datenblatt
· Chemicals/sludge/abrasive liquids
pump_type: Peristaltic hose pump
drive_type: Electric
installation: Dosing/transfer
Common Failures:
- • Hose rupture after fatigue
- • Shoe and hose compression wear
- • Gearbox bearing wear
- • Leak detector activation after hose failure
Service: Maintain hose replacement interval based on service severity. Check lubricant and inspect leak detection system.
Spares: Hose, lubricant, shoe set, gearbox seals and leak detector components are key spares.