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 Price Type Connection Body Material Maximum Working Pressure Thread Size Thread Standard
RS Stock No. 458-6794
Mfr. Part No.4890 17 17
BrandLegris
$194.44
Each
units
Single 3/8 in G Stainless Steel 40 bar 3/8in G
RS Stock No. 486-160
BrandRS PRO
$36.79
Each
units
Single 1-1/4 in BSPP Brass 12 bar 1-1/4in BSPP
RS Stock No. 510-3738
BrandRS PRO
$181.74
Each
units
Single 2 in BSPT Bronze 20 bar 2in BSPT
RS Stock No. 510-3766
BrandRS PRO
$46.35
Each
units
Single 1 in BSPT Bronze 20 bar 1in BSPT
RS Stock No. 499-2650
BrandRS PRO
$129.50
Each
units
Single 1 in BSP Stainless Steel 14 bar 1in BSP
RS Stock No. 794-8378
Mfr. Part No.FLOW230907
$72.08
Each
units
Double 1 in BSP Female Brass 10 bar 1in BSP
RS Stock No. 340-3345
BrandRS PRO
$79.56
Each
units
Single 2 in BSP Brass 16 bar 2in BSP
RS Stock No. 458-6801
Mfr. Part No.4890 21 21
BrandLegris
$232.32
Each
units
Single 1/2 in G Stainless Steel 40 bar 1/2in G
RS Stock No. 720-9291
BrandRS PRO
$177.16
Each
units
Single - Stainless Steel - 32mm -
RS Stock No. 284-2755
BrandRS PRO
$714.25
Each
units
Single 2 in BSPT Bronze 25 bar 2in BSPT
RS Stock No. 367-9441
Mfr. Part No.222000
$216.95
Each
units
Sight Glass 1/2 in BSPP Brass 3.5 bar 1/2in BSPP
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. 794-8381
Mfr. Part No.FLOW230009
$167.92
Each
units
Double 1-1/2 in BSP Female Brass 10 bar 1-1/2in BSP
RS Stock No. 214-0655
Mfr. Part No.161561067
$330.41
Each
units
Single - PVC-U 16 bar - -
RS Stock No. 499-2638
BrandRS PRO
$96.31
Each
units
Single 3/4 in BSP Stainless Steel 14 bar 3/4in BSP
RS Stock No. 486-182
BrandRS PRO
$95.65
Each
units
Single 2 in BSPP Brass 16 bar 2in BSP
RS Stock No. 340-3294
BrandRS PRO
$16.44
Each
units
Single 1/2 in BSP Brass 16 bar 1/2in BSP
RS Stock No. 138-5656
Mfr. Part No.340055
BrandSferaco
$20.20
Each
units
Double 3/4 in BSP Female, 3/4 in BSP Male Brass 10 bar 3/4in BSP
RS Stock No. 486-237
BrandRS PRO
$54.11
Each
units
Single 1-1/2 in BSPP Brass 12 bar 1-1/2in BSPP
RS Stock No. 794-8362
Mfr. Part No.FLOW230004
$59.61
Each
units
Double 28 mm BSP Female Brass 10 bar 28mm BSP
Related Products
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 ...
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 ...
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 casting. Socket weld (option)Thread type: ASME B1.20.1 (NPT), DIN ...
A compact stainless steel non return disc check ...
Description:
A compact stainless steel non return disc check valve designed for use with steam and hot condensate. These valves have a CE marking of PN25 / PN40. Connections are flanged (wafer type)Low pressure drop. Simple and compact design. Horizontal or ...