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 41 - 60 of 81 products
Results per page
Description Price Type Connection Body Material Maximum Working Pressure Thread Size Thread Standard
RS Stock No. 510-3788
BrandRS PRO
$38.01
Each
units
Single 3/4 in BSPT Bronze 20 bar 3/4in BSPT
RS Stock No. 486-211
BrandRS PRO
$62.37
Each
units
Single 1-1/4 in BSPP Brass 16 bar 1-1/4in BSP
RS Stock No. 499-2666
BrandRS PRO
$175.27
Each
units
Single 1-1/4 in BSP Stainless Steel 14 bar 1-1/4in BSP
RS Stock No. 499-2650
BrandRS PRO
$129.50
Each
units
Single 1 in BSP Stainless Steel 14 bar 1in BSP
RS Stock No. 458-6788
Mfr. Part No.4890 13 13
BrandLegris
$173.39
Each
units
Single 1/4 in G Stainless Steel 40 bar 1/4in G
RS Stock No. 365-6678
Mfr. Part No.293100
$108.36
Each
units
Single 1/2 in BSPP Bronze 14 bar 1/2in BSPP
RS Stock No. 896-8355
Mfr. Part No.1/4SCV
BrandJohn Guest
$141.23
1 Bag of 10
Bag(s)
Single 1/4 in Push Fit Acetal Copolymer 10 bar - -
RS Stock No. 214-0627
Mfr. Part No.161561065
$218.60
Each
units
Single - PVC-U 16 bar 1 1/4in -
RS Stock No. 917-1943
Mfr. Part No.445786
$169.77
Each
units
Sight Glass 3/4 in Rp Female Brass 12 bar 3/4in BSP
RS Stock No. 754-987
Mfr. Part No.15DCV
$30.82
Each
units
Double - POM 12 bar - -
RS Stock No. 214-0605
Mfr. Part No.161561063
$155.29
Each
units
Single 3/4 in Socket PVC-U 16 bar 3/4in -
RS Stock No. 365-6707
Mfr. Part No.222300
$371.11
Each
units
Single 1/2 in BSPP Bronze 3.6 bar 1/2in BSPP
RS Stock No. 366-4657
Mfr. Part No.223300
$418.32
Each
units
Single 3/4 in BSPP Bronze 3.6 bar 3/4in BSPP
RS Stock No. 794-8384
Mfr. Part No.FLOW230910
$233.94
Each
units
Double 2 in BSP Female Brass 10 bar 2in BSP
RS Stock No. 458-6794
Mfr. Part No.4890 17 17
BrandLegris
$195.58
Each
units
Single 3/8 in G Stainless Steel 40 bar 3/8in G
RS Stock No. 917-1934
Mfr. Part No.445631
$127.86
Each
units
- - Stainless Steel - 3/4in -
RS Stock No. 794-8353
Mfr. Part No.FIBV246908
$24.60
Each
units
Double 1/8 in BSP Brass 6 bar 1/8in BSP
RS Stock No. 214-0649
Mfr. Part No.161561066
$266.42
Each
units
Single - PVC-U 16 bar - -
RS Stock No. 794-8410
Mfr. Part No.FLOW235908
$86.72
Each
units
Single 1-1/2 in BSP Female Brass 10 bar 1-1/2in BSP
RS Stock No. 214-0611
Mfr. Part No.161561064
$176.81
Each
units
Single - PVC-U 16 bar 1in -
Related Products
Non-return or check valves which allow flow in ...
Description:
Non-return or check valves which allow flow in one direction only. Application : Industry, pneumatics, hydraulic, plumbing installations. Operating Temperature : +0゚C / +90゚C Operating pressure : PN12 1/2' to 1’’, PN10 1.1/4’’ to 2’’, PN8 2.1/2’’ to 4’’Threads : ...
Application : Industry, pneumatics, hydraulic, plumbing installations. Operating ...
Description:
Application : Industry, pneumatics, hydraulic, plumbing installations. Operating Temperature : -20゚C / +100゚C Operating pressure : see non-shock cold working pressure chart on data sheet. Threads : ISO 228 parallel female by female threads Stem : NylonNBR 65 SH/PS seal ...
This Sferaco check valve is anti-pollution to prevent ...
Description:
This Sferaco check valve is anti-pollution to prevent reverse water flow. Constructed from brass that ensures strength and reliability. Featuring a male and female connection of " (10 mm). Brass construction Control the flow of water Strong and reliable fitting ...
For heating, sanitary and compressed air systems, pumps ...
Description:
For heating, sanitary and compressed air systems, pumps and autoclaves. Body in hot forged DZR brass. Threading to BS2779Hostaform inner valve. Spring in 18//8 AISI 302-304 stainless steel. Hydrostatic test pressures 30 bar/435psi (shell), 22 bar/315psi (seat)Compact design, allows flow ...