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 794-8353
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 486-215
BrandRS PRO
HK$78.02
單位
Single 3/4 in BSPP Brass 16 bar 3/4in 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 720-9298
BrandRS PRO
HK$490.08
單位
Single - Stainless Steel - 25mm -
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 486-211
BrandRS PRO
HK$186.12
單位
Single 1-1/4 in BSPP Brass 16 bar 1-1/4in BSP
RS庫存編號 720-9295
BrandRS PRO
HK$815.79
單位
Single - Stainless Steel - 40mm -
RS庫存編號 510-3744
BrandRS PRO
HK$474.31
單位
Single 1-1/2 in BSPT Bronze 20 bar 1-1/2in BSPT
RS庫存編號 486-237
BrandRS PRO
HK$184.89
單位
Single 1-1/2 in BSPP Brass 12 bar 1-1/2in BSPP
RS庫存編號 486-170
BrandRS PRO
HK$47.30
單位
Single 3/8 in BSPP Brass 12 bar 3/8in BSPP
RS庫存編號 486-164
BrandRS PRO
HK$82.81
單位
Single 1 in BSPP Brass 12 bar 1in BSPP
RS庫存編號 720-9305
BrandRS PRO
HK$1,118.41
單位
Single - Stainless Steel 40 bar 50mm ANSI
RS庫存編號 499-2622
BrandRS PRO
HK$335.10
單位
Single 1/2 in BSP Stainless Steel 14 bar 1/2in BSP
RS庫存編號 720-9291
BrandRS PRO
HK$652.79
單位
Single - Stainless Steel - 32mm -
RS庫存編號 499-2650
BrandRS PRO
HK$486.58
單位
Single 1 in BSP Stainless Steel 14 bar 1in BSP
RS庫存編號 284-2755
BrandRS PRO
HK$2,029.44
單位
Single 2 in BSPT Bronze 25 bar 2in BSPT
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 794-8410
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 917-1934
製造零件編號445631
HK$634.42
單位
- - Stainless Steel - 3/4in -
RS庫存編號 214-0611
製造零件編號161561064
HK$660.00
單位
Single - PVC-U 16 bar 1in -