... 10",Pressure Seal Cover High Pressure Swing Check ValveCharacteristic:1, threads: BSPT,BSP,NPT,DIN259/29992, silica sol and hot investment casting ... stainless steel Valve body Bonnet Petal. 3, application: water, gas, air and some corrosive fluid medium4, normal temperature rated working pressure ... a very strong resistance against aging and hygienic. High Pressure Swing Check Valve