Check Valve Design Standard: API 6D, API 594, ASME B16.34
Face to Face: ASME B16.10
End Connection: ASME B16.5, ASME B16.25
Inspection and Test: API 598
Visual Inspection Standard: API 6D
MAIN FEATURES
Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave.
An important concept in check valves is the cracking pressure which is the minimum differential upstream pressure between inlet and outlet at which the valve will operate.
Check valve is mainly used to block the flow of fluid on the pipeline.
Check valves could be used in different temperature and pressure depending on the process condition and could be used for a variety of different fluid depending on the valve material.
