Non Return Valves

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
  • Non Return Valves

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
  • Non Return Valves

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