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
118,23 €
Each
Unité
Single 1-1/4 in BSP Stainless Steel 14 bar 1-1/4in BSP
N° de stock RS 458-6788
Référence fabricant4890 13 13
MarqueLegris
64,15 €
Each
Unité
Single 1/4 in G Stainless Steel 40 bar 1/4in G
N° de stock RS 486-148
MarqueRS PRO
8,71 €
Each
Unité
Single 1/2 in BSPP Brass 12 bar 1/2in BSPP
N° de stock RS 486-164
MarqueRS PRO
13,79 €
Each
Unité
Single 1 in BSPP Brass 12 bar 1in BSPP
N° de stock RS 486-221
MarqueRS PRO
38,30 €
Each
Unité
Single 1-1/2 in BSPP Brass 16 bar 1-1/2in BSP
N° de stock RS 720-9273
MarqueRS PRO
101,84 €
Each
Unité
Single 3/4 in BSP Stainless Steel 25 bar 3/4in BSP
N° de stock RS 720-9279
MarqueRS PRO
82,17 €
Each
Unité
Single 1/2 in BSP Stainless Steel 25 bar 1/2in BSP
N° de stock RS 486-211
MarqueRS PRO
29,37 €
Each
Unité
Single 1-1/4 in BSPP Brass 16 bar 1-1/4in BSP
N° de stock RS 458-6794
Référence fabricant4890 17 17
MarqueLegris
93,61 €
Each
Unité
Single 3/8 in G Stainless Steel 40 bar 3/8in G
N° de stock RS 486-158
MarqueRS PRO
12,33 €
Each
Unité
Single 3/4 in BSPP Brass 12 bar 3/4in BSPP
N° de stock RS 720-9282
MarqueRS PRO
112,95 €
Each
Unité
Single 1 in BSP Stainless Steel 25 bar 1in BSP
N° de stock RS 367-9441
Référence fabricant222000
MarqueSpirax Sarco
121,48 €
Each
Unité
Sight Glass 1/2 in BSPP Brass 3.5 bar 1/2in BSPP
N° de stock RS 486-160
MarqueRS PRO
22,58 €
Each
Unité
Single 1-1/4 in BSPP Brass 12 bar 1-1/4in BSPP
N° de stock RS 754-987
Référence fabricant15DCV
MarqueJG Speedfit
16,69 €
Each
Unité
Double - POM 12 bar - -
N° de stock RS 794-8394
Référence fabricantFLOW235004
10,88 €
Each
Unité
Single 1/2 in BSP Female Brass 10 bar 1/2in BSP
N° de stock RS 510-3744
MarqueRS PRO
70,34 €
Each
Unité
Single 1-1/2 in BSPT Bronze 20 bar 1-1/2in BSPT
N° de stock RS 499-2638
MarqueRS PRO
66,02 €
Each
Unité
Single 3/4 in BSP Stainless Steel 14 bar 3/4in BSP
N° de stock RS 510-3788
MarqueRS PRO
24,33 €
Each
Unité
Single 3/4 in BSPT Bronze 20 bar 3/4in BSPT
N° de stock RS 366-4657
Référence fabricant223300
MarqueSpirax Sarco
216,71 €
Each
Unité
Single 3/4 in BSPP Bronze 3.6 bar 3/4in BSPP
N° de stock RS 486-233
MarqueRS PRO
46,68 €
Each
Unité
Single 2 in BSPP Brass 12 bar 2in BSPP