Double flap flange check valve

• Valve Body Material：A216/WCB,LCB/LF2,WC6/F11,WC9/F22, CF8/F304,CF3/F304L,CF8M/F316,CF3M/F316L
• Valve Caliber：2-24''
• Pressure Range：Class 150~2500LB
• Temperature Range：-29℃~560℃

Executive Standard

Manufacturing Standards: API 594，API 6D
Structure Length: API 598，API 6D
Flange End Surface: ASME B16.5，ASME B16.47
Test standard: ISO 5208，API598，API 6D

Features

Double-valve flange check valves are also known as counterflow valves, check valves, back pressure valves, and check valves. This type of valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline, and is an automatic valve. Check valves are used in piping systems to prevent backflow of media and venting of media in containers