Exhaust Valve (& Valve Seat)
criticalParent: Cylinder Head
Components for this Group (2)
MAN Exhaust Valve (Nimonic/Stellite)
MAN Energy Solutions ME/ME-C
· Supplier: MAN Energy Solutions
Common Failures:
- • Valve seat burning (hot corrosion from vanadium)
- • Stem seal leakage
- • Valve spindle sticking
- • Seat insert cracking
Service: Overhaul at 8,000-12,000 hrs. Stellite-faced seat. Grinding/lapping at overhaul. Check spindle guide clearance.
Weight: 320.0 kg
WIN-GD Exhaust Valve (X-DF)
WIN-GD X-DF
· Supplier: WIN-GD
Common Failures:
- • Hot corrosion on diesel mode (vanadium attack)
- • Valve rotation failure (Rotocap)
- • Stem guide wear
- • Seat insert loosening
Service: Gas mode extends valve life significantly (less hot corrosion). Overhaul at 16,000 hrs (gas-only: 24,000 hrs).
Weight: 300.0 kg