Check Valves

Check valves prevent reverse flow of fluids and gases within a pipeline system. They are designed to allow fluid to flow one way through the pipeline. Due to the simple design, check valves generally operate without automation or human interaction and instead rely on the flow velocity of the fluid to open and close.

How do they work?

Check valves are flow sensitive and rely on the line fluid to open and close. The internal disc allows flow to pass forward, which opens the valve. The disc begins closing the valve as forward flow decreases or is reversed, depends on the design. Construction is normally simple with only a few components such as the body, seat, disc and cover.

Check Valve types

There are several types of check valves for just about any application. Some of the more popular types include:
● Ball
● Dual plate
● Double door
● Spring assisted inline
● Nozzle
● Piston or lift
● swing checks

As with other types of valves, speciality check valves can be found for special applications.


Check valves are found in just about any type of facility from industrial plants and homes.

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Description Price Type Connection Body Material Maximum Working Pressure Thread Size Thread Standard
RS庫存編號 794-8397
製造零件編號FLOW235002
HK$110.20
單位
Single 22 mm BSP Female Brass 10 bar 22mm BSP
RS庫存編號 794-8388
製造零件編號FLOW235001
HK$70.49
單位
Single 15 mm BSP Female Brass 10 bar 15mm BSP
RS庫存編號 794-8394
製造零件編號FLOW235004
HK$101.96
單位
Single 1/2 in BSP Female Brass 10 bar 1/2in BSP
RS庫存編號 794-8413
製造零件編號FLOW235909
HK$545.54
單位
Single 2 in BSP Female Brass 10 bar 2in BSP
RS庫存編號 794-8375
製造零件編號FLOW230006
HK$209.61
單位
Double 3/4 in BSP Female Brass 10 bar 3/4in BSP
RS庫存編號 794-8378
製造零件編號FLOW230907
HK$382.84
單位
Double 1 in BSP Female Brass 10 bar 1in BSP
RS庫存編號 794-8350
製造零件編號FLOW230002
HK$89.48
單位
Double 15 mm BSP Female Nickel Plated Brass 10 bar 15mm BSP
RS庫存編號 794-8362
製造零件編號FLOW230004
HK$295.91
單位
Double 28 mm BSP Female Brass 10 bar 28mm BSP
RS庫存編號 794-8404
製造零件編號FLOW235005
HK$126.34
單位
Single 3/4 in BSP Female Brass 10 bar 3/4in BSP
RS庫存編號 794-8381
製造零件編號FLOW230009
HK$936.67
單位
Double 1-1/2 in BSP Female Brass 10 bar 1-1/2in BSP
RS庫存編號 794-8410
製造零件編號FLOW235908
HK$456.73
單位
Single 1-1/2 in BSP Female Brass 10 bar 1-1/2in BSP
RS庫存編號 794-8356
製造零件編號FLOW230001
HK$89.48
單位
Double 15 mm BSP Female Brass 10 bar 15mm BSP
RS庫存編號 794-8384
製造零件編號FLOW230910
HK$1,133.51
單位
Double 2 in BSP Female Brass 10 bar 2in BSP
RS庫存編號 794-8353
製造零件編號FIBV246908
HK$127.29
單位
Double 1/8 in BSP Brass 6 bar 1/8in BSP
RS庫存編號 794-8366
製造零件編號FLOW230005
HK$97.83
單位
Double 1/2 in BSP Female Brass 10 bar 1/2in BSP