There are various types of check valves used in a wide variety of applications. 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. Typically the check valve is designed for and can therefore be specified for a specific cracking pressure.
Non Return Valves – Single Disc – Lift Check & Swing Check
DESIGN STANDARD
| API 609 |
TESTING STANDARD
| BS EN 12266-1 |
M.O.C.
| WCB / CF8 / CF8M |
END CONNECTION
| WAFER |
Non Return Valves – Single Disc – Lift Check
(Non Slam)
PRESSURE RATING |
SIZE RANGE |
DESIGN |
|
|
|
150# |
15 mm to 150 mm |
API 594 |
Non Return Valves – Single Disc – Swing Check
PRESSURE RATING |
SIZE RANGE |
DESIGN |
PN 10 (without Spring) |
50 mm to 600 mm |
API 609 |
PN16 (with Spring) |
50 mm to 300 mm |
API 609 |