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For more than 95 years, Eaton has been designing and developing engine valve technologies for manufacturers that require high‑quality solutions for gasoline, diesel and alternative fuel engines. Today, Eaton is one of the world’s largest and most experienced suppliers of engine valves and valve actuation systems, supporting nearly every major vehicle and engine OEM globally.
This long-standing expertise is supported by global engineering, testing and validation capabilities, helping manufacturers address increasing combustion pressures, higher operating temperatures and more demanding duty cycles, while maintaining durability, efficiency and performance across a wide range of applications.
Eaton’s valve portfolio combines proven manufacturing processes with continuous materials and design innovation. Technologies such as hollow valve manufacturing, advanced seat welding, salt bath nitriding, and proprietary materials and coatings are engineered to reduce thermal fatigue and effectively manage the challenges of high combustion pressures, corrosion and seat wear in today’s high‑output engines.
As OEMs adopt advanced combustion strategies to improve efficiency and performance, thermal management at the valve becomes increasingly critical. Eaton’s latest hollow valve solutions are designed to help manufacturers better manage extreme engine temperatures commonly seen in heavy-duty and high-load operating environments.
Turbulator‑equipped hollow valves are engineered to improve internal valve cooling, by increasing sodium movement within the hollow structure. This enhanced circulation boosts heat transfer away from the valve head and enables lower operating temperatures and improved durability under sustained thermal load.
Building on decades of experience in hollow valve design, Eaton’s latest generation of hollow valves delivers a significant reduction in valve temperatures compared to solid valves of similar material and design. Improved thermal control at the valve supports greater flexibility in material selection, increased resistance to thermal fatigue and wear, and reliable performance across demanding duty cycles.
These valve designs are supported by Eaton’s broad and continuously evolving materials portfolio, including Crutonite®, a proprietary alloy engineered for high‑temperature strength, corrosion resistance and long service life in severe combustion environments.
Eaton valve technologies support a wide range of engine platforms—including gasoline, diesel, alternative fuels and emerging combustion concepts—allowing manufacturers to address future engine requirements within a proven, durable valve technology portfolio.
Eaton differentiates itself by using innovative technology to produce engine valves.
Engine downsizing coupled with increased power density requires valves with higher strength and temperature resistance. This challenge can be addressed with high performance materials, special seat and stem coatings, lightweight and hollow valves, which enable internal cooling.
Eaton hollow valves ensure engine knocking reduction enabling fuel economy, catalitic converter efficiency and specific power increase.
Improved wear resistance
Proven reliability for increased power
Crutonite (EMS 200) is Eaton's Automotive News PACE Award-winning, proprietary high-temperature exhaust valve alloy with reduced nickel content. It can be used on intake or exhaust valves.
Key features and benefits:
Eaton is a leading global supplier of engine valves. Our facilities utilize state-of-the-art and proprietary technology to manufacture a range of products for the automotive, commercial vehicle, off-highway, agriculture, and motorcycle markets.
| Stem diameter | 4-16 millimeters |
|---|---|
| Stem length | up to 400 millimeters |
| Seat angle | 20-45 degree |
| Typology / Features | Martensitic alloys, Austenitic alloys, Super alloys Monometallic and bimetallic Hollow head valve with sodium for cooling Hollow valves with or without sodium for cooling Tube to Solid (TTS) friction welded Top of Head (TOH) plug laser welded Seat hardened and tip hardened Seat hard faced valves by Plasma Transfer Arc (PTA) or Laser Cladding (LC) processes Single and multigrooves keepers interface |
| Coatings | Chrome plated Nitrided PVD coated Ceramic coated |
Eaton's portfolio includes solid valves, sodium cooled hollow stem valves and an innovative sodium cooled hollow head valves to meet internal combustion engine applications requirements. Sodium cooled hollow stem valves are required to meet reliability targets of modern turbo gasoline applications. Eaton´s hollow head valve is an innovative sodium cooled hollow head valve aimed to improve the combustion efficiency of high-performance gasoline engines in passenger cars. See Eaton´s technology that can help OEMs to achieve up to 13% of 2025 CO2 reduction target.
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