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 Prix Type Connection Body Material Maximum Working Pressure Thread Size Thread Standard
N° de stock RS 499-2666
MarqueRS PRO
92,82 €
Each
Unité
Single 1-1/4 in BSP Stainless Steel 14 bar 1-1/4in BSP
N° de stock RS 486-148
MarqueRS PRO
8,54 €
Each
Unité
Single 1/2 in BSPP Brass 12 bar 1/2in BSPP
N° de stock RS 486-164
MarqueRS PRO
13,26 €
Each
Unité
Single 1 in BSPP Brass 12 bar 1in BSPP
N° de stock RS 486-211
MarqueRS PRO
29,75 €
Each
Unité
Single 1-1/4 in BSPP Brass 16 bar 1-1/4in BSP
N° de stock RS 720-9273
MarqueRS PRO
100,33 €
Each
Unité
Single 3/4 in BSP Stainless Steel 25 bar 3/4in BSP
N° de stock RS 486-221
MarqueRS PRO
36,29 €
Each
Unité
Single 1-1/2 in BSPP Brass 16 bar 1-1/2in BSP
N° de stock RS 720-9279
MarqueRS PRO
80,96 €
Each
Unité
Single 1/2 in BSP Stainless Steel 25 bar 1/2in BSP
N° de stock RS 486-160
MarqueRS PRO
22,14 €
Each
Unité
Single 1-1/4 in BSPP Brass 12 bar 1-1/4in BSPP
N° de stock RS 486-158
MarqueRS PRO
12,09 €
Each
Unité
Single 3/4 in BSPP Brass 12 bar 3/4in BSPP
N° de stock RS 720-9282
MarqueRS PRO
111,28 €
Each
Unité
Single 1 in BSP Stainless Steel 25 bar 1in BSP
N° de stock RS 284-2727
MarqueRS PRO
173,29 €
Each
Unité
Single 1 in BSPT Bronze 25 bar 1in BSPT
N° de stock RS 486-205
MarqueRS PRO
19,81 €
Each
Unité
Single 1 in BSPP Brass 16 bar 1in BSP
N° de stock RS 284-2733
MarqueRS PRO
152,99 €
Each
Unité
Single 1-1/4 in BSPT Bronze 25 bar 1-1/4in BSPT
N° de stock RS 720-9320
MarqueRS PRO
120,07 €
Each
Unité
Sight Glass 1/2 in BSP Bronze 10 bar 1/2in BSP
N° de stock RS 486-237
MarqueRS PRO
32,90 €
Each
Unité
Single 1-1/2 in BSPP Brass 12 bar 1-1/2in BSPP
N° de stock RS 720-9298
MarqueRS PRO
68,93 €
Each
Unité
Single - Stainless Steel - 25mm -
N° de stock RS 486-209
MarqueRS PRO
9,77 €
Each
Unité
Single 1/2 in BSPP Brass 16 bar 1/2in BSP
N° de stock RS 499-2622
MarqueRS PRO
54,91 €
Each
Unité
Single 1/2 in BSP Stainless Steel 14 bar 1/2in BSP
N° de stock RS 499-2672
MarqueRS PRO
113,18 €
Each
Unité
Single 1-1/2 in BSP Stainless Steel 14 bar 1-1/2in BSP
N° de stock RS 720-9305
MarqueRS PRO
156,02 €
Each
Unité
Single - Stainless Steel 40 bar 50mm ANSI