Swing type forged Check Valves or Piston type forged Check Valves are designed to be either in full bore or reduced bore. PRODUCT RANGE Sizes NPS 1/2 to NPS 2 Class 800 to Class 2500 DESIGN FEATURES SW, NPT, RF or BW Bolted Bonnet, Welded Bonnet or Pressure Seal Bonnet MATERIALS Available in Forged (A105, LF2, F5, F11, F22, A182 F304 (L), F316 (L), F347, F321, F51), Alloy 20, Monel, Inconel, Hastelloy DESIGN STANDARD Design & manufacture according to API 602, ASME B16.34 End Connection according to ASME B16.11 (SW), ASME B1.20.1 (NPT), ASME B16.5 (RF, RTJ) Test & inspection according to API 598 Also available per NACE MR-0175, NACE MR-0103China Check Valve manufacturers website:http://www.fluid-valves.com/check-valve/