Premium Range
Exhaust & Inlet Valves
EXHAUST & INLET VALVE SPINDLES, SEATS, GUIDES, ROTATORS & SPRINGS – FOR 2-STROKE & 4-STROKE MARINE DIESEL ENGINES – NEW & RECONDITIONED
TypeExhaust / Inlet Valve Assemblies
MaterialHeat-resistant alloys (Nimonic, Stellite-coated, etc.)
Engine Types2-stroke & 4-stroke main & auxiliary
BrandsMAN, Wärtsilä, Caterpillar, Cummins, Yanmar, Daihatsu, MAK
Full Technical Specifications ▶
| Parameter | Value / Range |
|---|---|
| Components | Valve spindle, seat insert, valve guide, valve rotator (vaned / non-vaned), valve spring, spring retainer |
| Material (Exhaust) | Nimonic 80A/90, Inconel, Stellite 6/21 hardfacing, heat-resistant Cr-Ni steels |
| Material (Inlet) | High-tensile steel, chromium-plated stem, hardened seat |
| Surface Treatment | Plasma-sprayed Stellite, nitrided stem, chrome-plated guide |
| Hardfacing | Stellite 6/12/21 on seat & valve face (exhaust), especially for HFO operation |
| Diameter Range | Ø 40 mm – Ø 300+ mm (large 2-stroke exhaust valves) |
| Services Available | New OEM/aftermarket, reconditioned (re-stellite, re-grind, crack repair), valve cage exchange |
| Compliance | Class approval (DNV, ABS, BV, LR), IACS UR M44, emission compliant coatings |
| Applications | Main propulsion (MAN ME/MC, WinGD RT-flex/W-X), auxiliary engines, gen-sets |
Complete range of exhaust and inlet valve components for marine diesel engines — new OEM/aftermarket, reconditioned, or individual spares (spindles, seats, guides, rotators, springs). Specially suited for heavy fuel oil (HFO) operation with Stellite hardfacing and high-temperature alloys. We supply for MAN B&W, Wärtsilä/Sulzer, Caterpillar, Cummins, Yanmar, Daihatsu, MAK, Bergen, etc. Services include valve reconditioning, Stellite re-application, seat grinding, and full class-approved testing & documentation.
