EXHAUST VALVE

The exhaust valve is not made of common steels, but with special hi-tech austenitic steel alloys, containing chromium, manganese and nickel. For exhaust valves, it is often necessary to use two different materials, one for the stem (upper part of the valve), suitable for hardening with heat treatment, the other for the head, suitable for greater heat resistance.

If necessary, the valve seat can be reinforced with a stellite coating, in order to further improve mechanical and heat resistance. For high-performance engines, this is not enough. In these cases, superalloys based on nickel or titanium are used. In some cases, the valve stem can be filled with sodium, which helps to speed up the heat dispersion, reducing the valve temperature by over 100 ° C.

Over the years we have developed over 5,000 valves, increasing our experience with materials, processes and quality controls.

Starting from a drawing or, in the simplest cases, with a sample, we can develop a product on specific request and also support the development with suggestions based on our experience.