Metal Sealed Unfurled ball Valve,This product is our national patent product,flange end,Penumatic operation type. Metal Sealed Unfurled ball Valve(patent product):1) Design: Manufacturers standard2) Test: API5983) Flange: ANSIB16.5/ANSIB16.47 ,Face to face: ASME B16.104) Size: 2"~32"5) Pressure: 150Lb~600Lb 6) Temperature:-250C~6500C7) Medium: Water,Oil,Steam and all kinds of corrosion medium.8) ...