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 85 products
Results per page
Description Price Type Connection Body Material Maximum Working Pressure Thread Size Thread Standard
RS Stock No. 458-6788
Mfr. Part No.4890 13 13
BrandLegris
$170.83
Each
units
Single 1/4 in G Stainless Steel 40 bar 1/4in G
RS Stock No. 340-3301
BrandRS PRO
$19.95
Each
units
Single 3/4 in BSP Brass 16 bar 3/4in BSP
RS Stock No. 896-8355
Mfr. Part No.1/4SCV
BrandJohn Guest
$137.88
1 Bag of 10
Bag(s)
Single 1/4 in Push Fit Acetal Copolymer 10 bar - -
RS Stock No. 720-9285
BrandRS PRO
$95.67
Each
units
Single - Stainless Steel - 15mm -
RS Stock No. 486-205
BrandRS PRO
$37.90
Each
units
Single 1 in BSPP Brass 16 bar 1in BSP
RS Stock No. 365-6678
Mfr. Part No.293100
$106.76
Each
units
Single 1/2 in BSPP Bronze 14 bar 1/2in BSPP
RS Stock No. 340-3317
BrandRS PRO
$26.62
Each
units
Single 1 in BSP Brass 16 bar 1in BSP
RS Stock No. 510-3744
BrandRS PRO
$134.77
Each
units
Single 1-1/2 in BSPT Bronze 20 bar 1-1/2in BSPT
RS Stock No. 754-987
Mfr. Part No.15DCV
$30.36
Each
units
Double - POM 12 bar - -
RS Stock No. 917-1943
Mfr. Part No.445786
$165.59
Each
units
Sight Glass 3/4 in Rp Female Brass 12 bar 3/4in BSP
RS Stock No. 214-0605
Mfr. Part No.161561063
$161.91
Each
units
Single 3/4 in Socket PVC-U 16 bar 3/4in -
RS Stock No. 486-215
BrandRS PRO
$23.10
Each
units
Single 3/4 in BSPP Brass 16 bar 3/4in BSP
RS Stock No. 486-158
BrandRS PRO
$19.72
Each
units
Single 3/4 in BSPP Brass 12 bar 3/4in BSPP
RS Stock No. 486-170
BrandRS PRO
$14.39
Each
units
Single 3/8 in BSPP Brass 12 bar 3/8in BSPP
RS Stock No. 486-209
BrandRS PRO
$17.52
Each
units
Single 1/2 in BSPP Brass 16 bar 1/2in BSP
RS Stock No. 214-0627
Mfr. Part No.161561065
$200.95
Each
units
Single - PVC-U 16 bar 1 1/4in -
RS Stock No. 794-8388
Mfr. Part No.FLOW235001
$13.89
Each
units
Single 15 mm BSP Female Brass 10 bar 15mm BSP
RS Stock No. 486-148
BrandRS PRO
$16.53
Each
units
Single 1/2 in BSPP Brass 12 bar 1/2in BSPP
RS Stock No. 486-160
BrandRS PRO
$37.71
Each
units
Single 1-1/4 in BSPP Brass 12 bar 1-1/4in BSPP
RS Stock No. 486-237
BrandRS PRO
$54.11
Each
units
Single 1-1/2 in BSPP Brass 12 bar 1-1/2in BSPP
Related Products
316L stainless steel construction, fully machined from quality ...
Description:
316L stainless steel construction, fully machined from quality forgingsEPDM seals. Creep resistant bearings. Reinforced nylon handle. Reduced risk of contamination by top and bottom seals. Operating temperature -10ºC to +120°CWorking pressure 0.9 bar to 10 bar. Polished disc.
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 ...
High quality brass valves. Manufactured in accordance with ...
Description:
High quality brass valves. Manufactured in accordance with BS5154 series BCompression ends are in accordance with BS864: part 2 (based on PN20), 5 bar at 120°C (hot)Solid taper wedge and non-rising spindle. Asbestos-free gland packing, replaceable whilst in service. Suitable ...