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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รายละเอียดสินค้า / Description ราคา / Price Type Connection Body Material Maximum Working Pressure Thread Size Thread Standard
RS Stock No. 486-170
Brand :RS PRO
THB285.11
Each
Units
Single 3/8 in BSPP Brass 12 bar 3/8in BSPP
RS Stock No. 486-160
Brand :RS PRO
THB732.84
Each
Units
Single 1-1/4 in BSPP Brass 12 bar 1-1/4in BSPP
RS Stock No. 720-9279
Brand :RS PRO
THB3,129.22
Each
Units
Single 1/2 in BSP Stainless Steel 25 bar 1/2in BSP
RS Stock No. 499-2622
Brand :RS PRO
THB1,642.58
Each
Units
Single 1/2 in BSP Stainless Steel 14 bar 1/2in BSP
RS Stock No. 499-2688
Brand :RS PRO
THB6,227.88
Each
Units
Single 2 in BSP Stainless Steel 14 bar 2in BSP
RS Stock No. 486-164
Brand :RS PRO
THB489.61
Each
Units
Single 1 in BSPP Brass 12 bar 1in BSPP
RS Stock No. 510-3788
Brand :RS PRO
THB1,081.96
Each
Units
Single 3/4 in BSPT Bronze 20 bar 3/4in BSPT
RS Stock No. 720-9305
Brand :RS PRO
THB5,972.05
Each
Units
Single - Stainless Steel 40 bar 50mm ANSI
RS Stock No. 340-3323
Brand :RS PRO
THB787.87
Each
Units
Single 1-1/4 in BSP Brass 16 bar 1-1/4in BSP
RS Stock No. 486-148
Brand :RS PRO
THB280.61
Each
Units
Single 1/2 in BSPP Brass 12 bar 1/2in BSPP
RS Stock No. 486-211
Brand :RS PRO
THB1,085.58
Each
Units
Single 1-1/4 in BSPP Brass 16 bar 1-1/4in BSP
RS Stock No. 510-3738
Brand :RS PRO
THB4,019.43
Each
Units
Single 2 in BSPT Bronze 20 bar 2in BSPT
RS Stock No. 499-2666
Brand :RS PRO
THB3,492.08
Each
Units
Single 1-1/4 in BSP Stainless Steel 14 bar 1-1/4in BSP
RS Stock No. 284-2733
Brand :RS PRO
THB5,957.71
Each
Units
Single 1-1/4 in BSPT Bronze 25 bar 1-1/4in BSPT
RS Stock No. 486-221
Brand :RS PRO
THB1,361.97
Each
Units
Single 1-1/2 in BSPP Brass 16 bar 1-1/2in BSP
RS Stock No. 282-0828
Brand :RS PRO
THB2,783.97
Each
Units
Single 1/2 in BSPT Bronze 25 bar 1/2in BSPT
RS Stock No. 510-3744
Brand :RS PRO
THB3,129.36
Each
Units
Single 1-1/2 in BSPT Bronze 20 bar 1-1/2in BSPT
RS Stock No. 720-9291
Brand :RS PRO
THB3,564.92
Each
Units
Single - Stainless Steel - 32mm -
RS Stock No. 720-9320
Brand :RS PRO
THB4,640.14
Each
Units
Sight Glass 1/2 in BSP Bronze 10 bar 1/2in BSP
RS Stock No. 499-2672
Brand :RS PRO
THB5,044.61
Each
Units
Single 1-1/2 in BSP Stainless Steel 14 bar 1-1/2in BSP
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