API 602 Check Valve
API 602 Check Valve Manufacturer in China: API 602 Check Valve, ASTM A105, LF2, 1/2 Inch - 2 Inch, CL150 - CL2500, API 602, BS 5352, ASME B16.34.
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. There are various types of check valves used in a wide variety of applications. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal. 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. Topper manufactures and supplies check valves that boast superior quality and meet the standard of API 602.