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 366-4657
製造零件編號223300
HK$1,890.89
單位
Single 3/4 in BSPP Bronze 3.6 bar 3/4in BSPP
RS庫存編號 365-6707
製造零件編號222300
HK$1,710.01
單位
Single 1/2 in BSPP Bronze 3.6 bar 1/2in BSPP
RS庫存編號 365-6684
製造零件編號293200
HK$736.54
單位
Single 3/4 in BSPP Bronze 14 bar 3/4in BSPP
RS庫存編號 367-9441
製造零件編號222000
HK$1,050.21
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Single 1/2 in BSPP Brass 3.5 bar 1/2in BSPP
RS庫存編號 365-6690
製造零件編號293300
HK$1,075.42
單位
Single 1 in BSPP Bronze 14 bar 1in BSPP
RS庫存編號 365-6678
製造零件編號293100
HK$471.88
單位
Single 1/2 in BSPP Bronze 14 bar 1/2in BSPP