wafer check valve Features: 1) check valves conform to ASME B16.34 2) Each tested according to API 589, and marking is per MSS SP-25 3) Three bonnet designs: a) Bolted b) Welded c) Pressure seal 4) Three different design configurations: a) Piston check b) Ball check c) Swing check 5) Working pressure: PN1.0 - 42.0MPa, Class 150 - 2,500lbs 6) Diameter: DN15 - 1,200mm, NPS1/2 - 48 7) Working temperature: 196 - 540¡ãC 8) Medium: water, steam, oil Inner packing: plastic bag Outer packing: polywood cases For more information please feel free to contact WENZHOU CAMINIX VALVE CO.,LTD