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 214-0655
製造零件編號161561067
HK$1,327.15
單位
Single - PVC-U 16 bar - -
RS庫存編號 794-8366
製造零件編號FLOW230005
HK$97.83
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Double 1/2 in BSP Female Brass 10 bar 1/2in BSP
RS庫存編號 510-3738
BrandRS PRO
HK$636.87
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Single 2 in BSPT Bronze 20 bar 2in BSPT
RS庫存編號 486-233
BrandRS PRO
HK$250.63
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Single 2 in BSPP Brass 12 bar 2in BSPP
RS庫存編號 696-8731
BrandConvac
HK$6,925.15
單位
- - - - - -
RS庫存編號 794-8413
製造零件編號FLOW235909
HK$545.54
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Single 2 in BSP Female Brass 10 bar 2in BSP
RS庫存編號 510-3788
BrandRS PRO
HK$198.53
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Single 3/4 in BSPT Bronze 20 bar 3/4in BSPT
RS庫存編號 340-3323
BrandRS PRO
HK$144.31
單位
Single 1-1/4 in BSP Brass 16 bar 1-1/4in BSP
RS庫存編號 178-0060
製造零件編號2224110
BrandWatts
HK$52.15
單位
- 3/4 in Brass 10 bar - -
RS庫存編號 486-182
BrandRS PRO
HK$331.65
單位
Single 2 in BSPP Brass 16 bar 2in BSP
RS庫存編號 282-0828
BrandRS PRO
HK$546.61
單位
Single 1/2 in BSPT Bronze 25 bar 1/2in BSPT
RS庫存編號 458-6801
製造零件編號4890 21 21
BrandLegris
HK$815.10
單位
Single 1/2 in G Stainless Steel 40 bar 1/2in G
RS庫存編號 486-158
BrandRS PRO
HK$64.60
單位
Single 3/4 in BSPP Brass 12 bar 3/4in BSPP
RS庫存編號 138-5656
製造零件編號340055
BrandSferaco
HK$95.72
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Double 3/4 in BSP Female, 3/4 in BSP Male Brass 10 bar 3/4in BSP
RS庫存編號 284-2733
BrandRS PRO
HK$1,327.86
單位
Single 1-1/4 in BSPT Bronze 25 bar 1-1/4in BSPT
RS庫存編號 510-3766
BrandRS PRO
HK$255.84
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Single 1 in BSPT Bronze 20 bar 1in BSPT
RS庫存編號 284-2711
BrandRS PRO
HK$788.27
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Single 3/4 in BSPT Bronze 25 bar 3/4in BSPT
RS庫存編號 214-0649
製造零件編號161561066
HK$979.00
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Single - PVC-U 16 bar - -
RS庫存編號 794-8404
製造零件編號FLOW235005
HK$126.34
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Single 3/4 in BSP Female Brass 10 bar 3/4in BSP
RS庫存編號 794-8384
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HK$1,133.51
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Double 2 in BSP Female Brass 10 bar 2in BSP