Applicable standards:
Steel check valves, API 6D / BS 1868
Steel check valves, ISO 14313
Steel valves, ASME B16.34
Face to face, ASME B16.10
Flanges end, ASME B16.5
Buttwelding ends, ASME B16.25
Inspection and test, API 598 / API 6D

Design description:
BB,Bolted bonnet cap
Swing type, Anti-rotation disc
Renewable seat rings
Non-penetrate disc shaft
Horizontal servece
Flanged or buttwelding ends