Metal Seated Ball Valve
Metal seated Ball Valves are preferred when the operating temperature is typically above 250 deg C and upto 400 deg C, where the soft seats fail. The ball made of SS304 / SS316 is either coated with Nickel (by Electroless Nickel Plating) or hard faced with Stellite or coated with Chrome Carbide (HVOF) depending upon the operating temperature and pressure. The matching metal seats are also hard faced or HVOF coated.