Check valve Design construction and Specification.
Forged Check valve conform to API602, BS5352 and ASME B16.34. Each are tested according to API598, and marking is per MSS SP-25.

Full port or Conventional port
OS&Y, Outside screw and Yoke
Two piece self aligning packing gland
Bolted bonnet with spiral-wound gasket, threaded and seal welded bonnet or threaded and pressure seal bonnet.
Integral backseat
ASME B16.11 Socket weld end to ASME B16.11
Screwed ends to ANSI/ASME B 1.20.1
Type: Bolted Bonnet, Welded bonnet, and Pressure seal bonnet
Size : ½” To 2”
Connection: BSP/NPT Thread, Socket Welding and Flange Connection