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VALVE ASSEMBLY Marine Engine Spare Parts is a critical core gas control component for marine engine systems. Made of high-quality wear-resistant and corrosion-resistant materials, it regulates gas intake and exhaust to maintain normal air exchange inside the cylinder. It features precise dimensional accuracy, stable structural performance and excellent fatigue resistance, suitable for routine servicing, shipyard overhaul and fault repair under marine harsh working conditions.
A well-matched valve assembly stabilizes engine gas exchange performance, prevents gas leakage and power reduction failure, reduces component failure risks and equipment downtime, and ensures efficient and reliable operation of marine engine units.
Please provide equipment model, specifications and part number before ordering to confirm compatibility.
R22 Valve Assembly | Wärtsilä Marine Main Engine Parts
The R22 Valve Assembly is a high-precision integrated valve component exclusively designed for Wärtsilä R22 series marine main engines. As a core control assembly inside the engine gas exchange system, it integrates valve spindle, valve head, valve seat, spring and retainer parts as a complete unit. It controls intake and exhaust gas flow with precise opening and closing timing during engine operation, regulating gas exchange efficiency and maintaining stable cylinder combustion. When the valve assembly suffers valve head burning, sealing surface wear, spring fatigue or valve stem deformation, it will cause gas blow-by, power reduction, abnormal exhaust temperature and increased fuel consumption, posing safety risks during vessel navigation. Replacing with standard R22 valve assembly restores original gas exchange performance and guarantees steady operation of the marine main engine.
Working under harsh marine operating conditions including long-term full-load navigation, cyclic high temperature, mechanical impact and salt-fog corrosion, the valve sealing surface will gradually erode and wear after long service hours. Damaged valve assembly leads to poor cylinder sealing, unstable compression pressure and accelerated wear of related matching parts. Regular inspection and replacement of valve assemblies are essential items for main engine overhaul and dry dock maintenance.
This precision R22 valve assembly adopts optimized valve head structure and precision lapped sealing surface. It maintains tight sealing during compression and combustion strokes, effectively preventing high-temperature gas leakage inside the cylinder. It can withstand frequent thermal shock and alternating mechanical impact under variable load navigation conditions, keeping stable valve timing and gas exchange efficiency.
With outstanding high-temperature oxidation resistance and wear resistance, the valve head resists erosion from high-temperature exhaust gas and heavy fuel ash deposits. Reliable sealing performance stabilizes cylinder working condition, reduces fuel consumption and lowers the risk of thermal damage to cylinder cover and piston components, greatly improving operational safety and long-cycle stability of Wärtsilä R22 main engines for ocean-going vessels, bulk carriers and container ships.
This R22 dedicated valve assembly is manufactured from high-grade heat-resistant alloy steel, customized for the high-temperature gas exchange environment of Wärtsilä R22 marine main engines. The valve head undergoes special hardening and surfacing treatment for high temperature and corrosion resistance. The valve stem is precision ground to guarantee smooth movement and minimize friction loss. The whole manufacturing process follows OEM technical requirements and universal marine diesel industry specifications, ensuring stable sealing performance and long service life.
Quantified Marine-Grade Performance Parameters
Parameter | Specification | Test & Implementation Standard |
Valve Material | Heat-resistant alloy steel | Raw material spectrum inspection |
Surface Treatment | Stellite surfacing, precision grinding | Hardness & thermal fatigue test |
Dimensional Tolerance | Precision tolerance for valve stem & head | CMM full dimensional inspection |
Sealing Performance | Tight sealing under rated cylinder pressure | Air tightness leakage test |
Working Temperature Range | High temperature resistance for exhaust environment | High temperature endurance test |
Service Feature | Anti-oxidation, wear-resistant, anti-thermal fatigue | Marine environment adaptability test |
Compliance Standard | Universal marine industrial manufacturing specifications | General marine diesel engine industry norms |
All R22 valve assemblies are manufactured strictly in accordance with Wärtsilä OEM engineering drawings and marine valve assembly standards. Each set undergoes raw material verification, surfacing treatment, precision grinding and complete assembly. Finished products will be tested for dimensional accuracy, sealing tightness and fatigue performance.
Every finished valve assembly passes full pre-delivery inspection. All dimensions and sealing parameters match original specifications, supporting direct drop-in replacement without secondary processing, improving overhaul efficiency and ensuring reliable gas exchange of the engine cylinder.
MAIN ENGINE | MAN B&W | S26MC,L/S35MC,L/S42MC,L/S50MC,L/S60MC,L/S70MC,L/S80MC,L/S90MC,S46MC-C,S50MC-C,S60MC-C,S70MC-C,S80MC-C,S90MC-C,K90MC-C,K98MC-C,K/L45GF(CA),55GF(CA),67GF(CA),80GF(CA),90GF(CA) |
WARTSILA | 6L20,9L20,8L32,R22,R32,L20,L32 | |
PIELSTICK | PC2-2,PC2-5,PC2-5L,PC2-5V,PC2-6,PA4,PA5,PA6 | |
HANSHIN | EL30-44,ELS-35,44,LH-28G,LU24-54,LUN28AR(G),LUS24-58,LF46-58 | |
NIIGATA | 16HS,16X,18CX,19HX,20AX,25BX,25CX,26AFTE,26KGHS,28AFTE,28BX,28KGHS,31EZ,31X,32CLX,34AFTE | |
SULZER | RTA38,RTA48,RTA52,RTA58,RTA62,RTA68,RTA72,RTA76,RTA84,RL(A/B)56,RL(A/B)66,RL(A/B)76, RL(A/B)90,RND68,RND76 | |
AKASAKA | A31,A34,A38,A41,A45,AH25,AH27,AH28,AH30,AH38,AH40,K28,K31,DM28FD,DM38FD,DM40FD,DM51SS | |
MITSUBISHI | UEC33LSE,UEC37LA,UEC45LA,UEC50LS,UEC52LA,UEC52LS,UEC60LS,UET45/75C,UET45/80D, UET52/90D,UET52/105H | |
AUX.ENGINE | MITSUBISHI | S6A,S6B,S6R,S6N,S16N,S16R,S12R,SA2 |
MAN B&W | 16/24,20/27,21/31,23/30,25/33,28/32,32/40,48/60,58/64 | |
YANMAR | HAL,KL,KDL,KFL,RAL,MAL,S165,S185,M200,M220,T220,T240,T260,Z280,N165,N18,N21,N165,N260,N280, N330,NY16,EY18,EY22,EY26,4CHL,6CHL | |
DAIHATSU | DK20,DK26,DK28,DK32,DL16,DL19,DL20,DL22,DL24,DL26,DL28,DL32,DS18,DS19,DS22,DS26,DS28,DS32, DS40,PK14,PK16,PL24,PL26,PS18,PS20,PS22,PS26,PS30 |
We supply full-series matching spare parts for Wärtsilä R22 main engine overhaul, including valve seat, valve spring, valve rotator, valve retainer, sealing rings and overhaul kits, offering one-stop procurement solutions for shipyards, shipping companies and marine service suppliers.
Each batch of R22 valve assemblies undergoes full-process inspection and performance screening, including raw material spectrum analysis, metallographic inspection, dimensional verification, air tightness test and thermal fatigue test. All inspection records are archived for customer review and dry-dock audit.
Manufactured in strict compliance with universal marine diesel industry norms and Wärtsilä OEM technical specifications. This valve assembly meets the demands of routine navigation and vessel overhaul projects, serving as reliable replacement accessories for marine main engines.
Valve assembly is a critical gas exchange component for Wärtsilä R22 main engine. Long-time high temperature, gas erosion and mechanical impact will cause valve head burning, sealing surface pitting and spring fatigue. Replace the valve assembly during major overhaul if gas blow-by or poor compression pressure is detected. Installing new standard R22 valve assembly restores original cylinder sealing performance, optimizes gas exchange and protects piston and cylinder cover from thermal damage.
Inspect valve assemblies regularly during routine maintenance. For vessels with long-term heavy-load operation, monitor exhaust temperature and cylinder compression pressure. Timely replacement prevents gas leakage and secondary wear of engine core components, securing stable and safe vessel operation.
Which engine does this valve assembly fit? This valve assembly is specially customized for Wärtsilä R22 marine main engines, also compatible with multiple mainstream marine main and auxiliary engine models listed above. Please provide complete engine model or original part number for accurate matching confirmation.
What is the delivery time? Standard R22 models are in stock with 7–10 working days fast delivery. Non-standard customized specifications support 7–15 working days production cycle.
Can you provide customized processing services? Yes, we support OEM customization and non-standard processing according to customer drawings and samples. All customized products undergo full-dimensional inspection and tightness testing before shipment.
What is your warranty policy? 12-month warranty for material and manufacturing defects. We provide professional after-sales technical support including installation guidance and fitting verification.
What is the MOQ and export packaging? MOQ is 1 unit for in-stock products, with favorable bulk discount for fleet batch orders. Standard export packaging adopts anti-rust oil treatment, moisture-proof wrapping and solid plywood crating, adapting to long-distance ocean transportation and overseas storage.
