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.

...
Read more Read less

Filters

Viewing 1 - 20 of 84 products
Results per page
Description Price Type Connection Body Material Maximum Working Pressure Thread Size Thread Standard
RS Stock No. 340-3294
BrandRS PRO
MYR30.41
Each
units
Single 1/2 in BSP Brass 16 bar 1/2in BSP
RS Stock No. 458-6788
Mfr. Part No.4890 13 13
BrandLegris
MYR336.46
Each
units
Single 1/4 in G Stainless Steel 40 bar 1/4in G
RS Stock No. 367-9441
Mfr. Part No.222000
MYR558.88
Each
units
Single 1/2 in BSPP Brass 3.5 bar 1/2in BSPP
RS Stock No. 499-2622
BrandRS PRO
MYR194.35
Each
units
Single 1/2 in BSP Stainless Steel 14 bar 1/2in BSP
RS Stock No. 486-148
BrandRS PRO
MYR24.87
Each
units
Single 1/2 in BSPP Brass 12 bar 1/2in BSPP
RS Stock No. 214-0605
Mfr. Part No.161561063
MYR337.09
Each
units
Single 3/4 in Socket PVC-U 16 bar 3/4in -
RS Stock No. 486-170
BrandRS PRO
MYR22.85
Each
units
Single 3/8 in BSPP Brass 12 bar 3/8in BSPP
RS Stock No. 214-0627
Mfr. Part No.161561065
MYR461.20
Each
units
Single - PVC-U 16 bar 1 1/4in -
RS Stock No. 486-211
BrandRS PRO
MYR97.51
Each
units
Single 1-1/4 in BSPP Brass 16 bar 1-1/4in BSP
RS Stock No. 486-164
BrandRS PRO
MYR43.45
Each
units
Single 1 in BSPP Brass 12 bar 1in BSPP
RS Stock No. 510-3722
BrandRS PRO
MYR90.60
Each
units
Single 1/2 in BSPT Bronze 20 bar 1/2in BSPT
RS Stock No. 794-8356
Mfr. Part No.FLOW230001
MYR46.16
Each
units
Double 15 mm BSP Female Brass 10 bar 15mm BSP
RS Stock No. 486-209
BrandRS PRO
MYR34.57
Each
units
Single 1/2 in BSPP Brass 16 bar 1/2in BSP
RS Stock No. 340-3323
BrandRS PRO
MYR75.09
Each
units
Single 1-1/4 in BSP Brass 16 bar 1-1/4in BSP
RS Stock No. 284-2733
BrandRS PRO
MYR756.03
Each
units
Single 1-1/4 in BSPT Bronze 25 bar 1-1/4in BSPT
RS Stock No. 340-3345
BrandRS PRO
MYR160.72
Each
units
Single 2 in BSP Brass 16 bar 2in BSP
RS Stock No. 510-3750
BrandRS PRO
MYR189.63
Each
units
Single 1-1/4 in BSPT Bronze 20 bar 1-1/4in BSPT
RS Stock No. 214-0649
Mfr. Part No.161561066
MYR534.12
Each
units
Single - PVC-U 16 bar - -
RS Stock No. 720-9295
BrandRS PRO
MYR433.50
Each
units
Single - Stainless Steel - 40mm -
RS Stock No. 365-6707
Mfr. Part No.222300
MYR910.01
Each
units
Single 1/2 in BSPP Bronze 3.6 bar 1/2in BSPP
Related Products
Application : Industry, pneumatics, hydraulic, plumbing installationsOperating Temperature ...
Description:
Application : Industry, pneumatics, hydraulic, plumbing installationsOperating Temperature : -20゚C / +100゚C Operating pressure : see non-shock cold working pressure chart on data sheetThreads : ISO 228 parallel female by female threads Stem : NylonNBR 65 SH/PS seal on nylon ...
For heating, sanitary and compressed air systems, pumps ...
Description:
For heating, sanitary and compressed air systems, pumps and autoclavesBody in hot forged DZR brassThreading to BS2779Hostaform inner valveSpring in 18//8 AISI 302-304 stainless steelHydrostatic test pressures 30 bar/435psi (shell), 22 bar/315psi (seat)Compact design, allows flow in one direction only, ...
Permits flow in one direction onlyBody and shut-off ...
Description:
Permits flow in one direction onlyBody and shut-off valve in stainless steel 316LSpring in stainless steel 302’O’-rings fluorelastomer FKM (FPM)Maximum working pressure 40 barTemperature range -20°C to +180°C.
RS Pro Brand Screwed End Swing Check Valves ...
Description:
RS Pro Brand Screwed End Swing Check Valves that allow liquids to flow in only one direction. 1/2 - 3" (DN15 - DN80)W.P: 200 WOGW.T: -20°C - 200°C (-4°F - 392°F)Investment castingSocket weld (option)Thread type: ASME B1.20.1 (NPT), DIN 2999 ...