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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Omschrijving Prijs Type Connection Body Material Maximum Working Pressure Thread Size Thread Standard
RS-stocknr. 486-209
FabrikantRS PRO
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Fabrikantnummer4890 13 13
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€ 57,80
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Single 1/2 in BSP Stainless Steel 25 bar 1/2in BSP
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Fabrikantnummer1/4SCV
FabrikantJohn Guest
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Single 1/4 in Push Fit Acetal Copolymer 10 bar - -
RS-stocknr. 340-3294
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FabrikantRS PRO
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Single 3/4 in BSP Stainless Steel 25 bar 3/4in BSP
RS-stocknr. 486-237
FabrikantRS PRO
€ 32,57
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Single 1-1/2 in BSPP Brass 12 bar 1-1/2in BSPP
RS-stocknr. 510-3722
FabrikantRS PRO
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Single 1/2 in BSPT Bronze 20 bar 1/2in BSPT
RS-stocknr. 794-8375
FabrikantnummerFLOW230006
€ 21,35
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Double 3/4 in BSP Female Brass 10 bar 3/4in BSP
RS-stocknr. 794-8366
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Double 1/2 in BSP Female Brass 10 bar 1/2in BSP
RS-stocknr. 794-8356
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Double 15 mm BSP Female Brass 10 bar 15mm BSP
RS-stocknr. 340-3339
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Single 1-1/2 in BSP Brass 16 bar 1-1/2in BSP
RS-stocknr. 499-2622
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Single 1/2 in BSP Stainless Steel 14 bar 1/2in BSP
RS-stocknr. 499-2666
FabrikantRS PRO
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Single 1-1/4 in BSP Stainless Steel 14 bar 1-1/4in BSP
RS-stocknr. 486-158
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Single 3/4 in BSPP Brass 12 bar 3/4in BSPP
RS-stocknr. 486-221
FabrikantRS PRO
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Single 1-1/2 in BSPP Brass 16 bar 1-1/2in BSP
RS-stocknr. 486-205
FabrikantRS PRO
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Single 1 in BSPP Brass 16 bar 1in BSP
RS-stocknr. 499-2672
FabrikantRS PRO
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Single 1-1/2 in BSP Stainless Steel 14 bar 1-1/2in BSP
RS-stocknr. 510-3738
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Single 2 in BSPT Bronze 20 bar 2in BSPT
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