Metal to Metal Seat Design
The metal to metal Ball Valve seat configuration occurs when you have a direct contact between the seat and the ball on the primary sealing area. For the secondary sealing you can choose an O-ring, lip seal or graphite depending on the application. The coating is usually made with Tungsten Carbides or Chrome Carbides and is sprayed over the surface of the seats or ball using the HVOF procedure. We can provide various designs to give you the best performance for your specific needs.
This type of seat is used for high pressure and dirty services, when the plastic inserts could be easily damaged. The maximum service temperature is about 400°C depending on the base material grade.