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 486-164
MarqueRS PRO
13,26 €
Each
Unité
Single 1 in BSPP Brass 12 bar 1in BSPP
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 720-9273
MarqueRS PRO
100,33 €
Each
Unité
Single 3/4 in BSP Stainless Steel 25 bar 3/4in 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 486-211
MarqueRS PRO
29,75 €
Each
Unité
Single 1-1/4 in BSPP Brass 16 bar 1-1/4in 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 720-9282
MarqueRS PRO
111,28 €
Each
Unité
Single 1 in BSP Stainless Steel 25 bar 1in 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 720-9285
MarqueRS PRO
50,29 €
Each
Unité
Single - Stainless Steel - 15mm -
N° de stock RS 510-3744
MarqueRS PRO
83,15 €
Each
Unité
Single 1-1/2 in BSPT Bronze 20 bar 1-1/2in BSPT
N° de stock RS 720-9291
MarqueRS PRO
93,13 €
Each
Unité
Single - Stainless Steel - 32mm -
N° de stock RS 486-215
MarqueRS PRO
13,20 €
Each
Unité
Single 3/4 in BSPP Brass 16 bar 3/4in BSP
N° de stock RS 499-2650
MarqueRS PRO
68,58 €
Each
Unité
Single 1 in BSP Stainless Steel 14 bar 1in BSP
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 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 720-9349
MarqueRS PRO
101,17 €
Each
Unité
Sight Glass 1 in BSP Brass 12 bar 1in BSP
N° de stock RS 340-3301
MarqueRS PRO
8,69 €
Each
Unité
Single 3/4 in BSP Brass 16 bar 3/4in BSP
N° de stock RS 340-3339
MarqueRS PRO
31,41 €
Each
Unité
Single 1-1/2 in BSP Brass 16 bar 1-1/2in BSP