Marine Exhaust Valves & Valve Gear

At Sourcing Marine, we understand that the Exhaust Valve and Valve Gear assembly is one of the most thermally and mechanically stressed systems in a 2-stroke marine engine. These components must withstand high-velocity exhaust gases and maintain a gas-tight seal under extreme pressure and temperature.

  • Advanced Surface Protection: Valve spindles are available with specialized coatings (such as Chromium or Nimonic alloys) to resist high-temperature corrosion and “hot-corrosion” from heavy fuel oil.
  • Precision Actuation: Hydraulic cylinders and air cylinders are machined to exact tolerances, ensuring the rapid and synchronized valve timing required for fuel efficiency.
  • Total Sealing Solutions: We supply every critical interface part, including high-pressure hydraulic pipes, high-temperature O-rings, and specialized packing sets.

Product Description

We specialize in supplying the complete ecosystem for exhaust gas management—from the heat-resistant valve spindles to the precision hydraulic actuators that control them. Whether you are maintaining a modern electronic ME/RT-flex engine or a classic MC/RTA workhorse, our components are engineered to ensure optimal gas flow and long-term structural integrity.

Technical Inventory & Component Support

Exhaust Valve Solutions for 2-Stroke Main Propulsion Engines

We support the entire valvetrain assembly for large crosshead engines, including both mechanical and hydraulic drive systems.

Available Components:

  • Valvetrain: Exhaust Valve Spindles (Shafts), Valve Seats (Bottom Pieces), Valve Housings.
  • Actuation & Control: Hydraulic Oil Cylinders, Air Cylinders, Piston Actuators, Roller Guides.
  • Auxiliaries: High-Pressure Hydraulic Pipes, Gaskets, O-Rings, and Packing Kits.

Supported Engine Series:

  • MAN B&W:
    • Electronic Control (ME): G95ME-C to S30ME-C (Full G/S/ME-B series coverage).
    • Mechanical (MC/MC-C): S90MC-C to S35MC-C, K98MC-C to K80MC-C.
    • Legacy Models: L90MC to L35MC, L/K-GF(CA) series, and GBE/GB models.
  • WARTSILA-SULZER:
    • RT-flex (Common Rail): 96, 82, 68, 60C, 58T, 50, 48T.
    • RTA Series: RTA84T-B, RTA68T-B, RTA96C, RTA84, RTA72U, RTA62, RTA52, RTA48.
    • Legacy Models: RLA, RLB, RND/M, and RD series.
  • MITSUBISHI (UEC):
    • Series: UEC60LSII, UEC50LSII, UEC43LSII, UEC37LSII, LS, LA, HA, and H-series.

Why Source Exhaust Components from Sourcing Marine?

  1. Material Integrity: Our valve spindles are sourced from leading foundries specializing in high-alloy steels, ensuring they resist the warping and “tuliping” common in lower-grade alternatives.
  2. Actuator Reliability: Our hydraulic and air cylinders are tested for response time and pressure retention, ensuring your engine timing remains within OEM parameters.
  3. Global Logistics: We maintain a strategic inventory of valve seats and spindles for the most common MAN S50/60MC and Wartsila RTA series to allow for immediate dispatch to your vessel’s next port of call.

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