check valves

Check valves (also called non-return valve, one-way valve) are used to allow the flow of fluid in only one direction. They prevent the flow of fluid in the other direction.  Check valves work automatically and do not need to be operated. Most... Read more Read more

Product Brand Connection size Material Seal Valve shape Connection type Min temperature (°C) Min. pressure difference (bar) Max temperature (°C) Max pressure at 20 °C (bar) Valve bore (mm) Kv value (m3/h) With lock spring With balance weight Width (mm) Height (mm) Surface protection Depth (mm) Article compression class Model With strainer basket Material quality
G1/4'' check valve...
£5.85 (£4.84 excl vat)
In stock
AZ Pneumatics 1/4 inch Brass FKM (FPM) Inline spring closed Inner thread cylindrical... 0 0.1 110 10 7 0.82 Yes No 13 34 Untreated 15 PN 10 Straight - -
G1/2'' Brass Check Valve...
£7.69 (£6.36 excl vat)
In stock
Tameson 1/2 inch Brass NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... -20 0.02 100 12 - 4.22 Yes No 34.5 47 Untreated 34.5 PN 12 Straight - -
G1/8'' check valve...
£4.70 (£3.89 excl vat)
In stock
AZ Pneumatics 1/8 inch Brass FKM (FPM) Inline spring closed Inner thread cylindrical... 0 0.1 110 10 5.2 0.45 Yes No 16 39 Untreated 18 PN 10 Straight - -
G1'' Brass Check Valve NBR...
£12.29 (£10.16 excl vat)
In stock
Tameson 1 inch Brass NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... -20 0.02 100 12 - 11.67 Yes No 47.5 60.5 Untreated 47.5 PN 12 Straight - -
G1/2'' Brass Foot Valve NBR...
£9.81 (£8.10 excl vat)
In stock
Tameson 1/2 inch Brass NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... -20 0.02 60 - - - - - - - - - - - Yes -
G1/2'' Stainless Steel 304...
£26.43 (£21.84 excl vat)
In stock
Tameson 1/2 inch Stainless steel FKM (FPM) Inline spring closed Inner thread cylindrical... -20 0.25 150 16 - - Yes No 66 32 Untreated 32 PN 16 Straight - Stainless steel 304 (1.4301)
G1'' Brass Foot Valve NBR...
£15.78 (£13.04 excl vat)
In stock
Tameson 1 inch Brass NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... -20 0.02 60 - - - - - - - - - - - Yes -
G3/4'' Brass Check Valve...
£9.87 (£8.16 excl vat)
In stock
Tameson 3/4 inch Brass NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... -20 0.02 100 12 - 7.92 Yes No 42 53 Untreated 42 PN 12 Straight - -
G3/4'' Stainless Steel 304...
£34.47 (£28.49 excl vat)
In stock
Tameson 3/4 inch Stainless steel FKM (FPM) Inline spring closed Inner thread cylindrical... -20 0.35 150 16 - - Yes No 72 45 Untreated 45 PN 16 Straight - Stainless steel 304 (1.4301)
G3/8'' Brass Check Valve...
£8.26 (£6.83 excl vat)
In stock
Tameson 3/8 inch Brass NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... -20 0.02 100 12 - 2.11 Yes No 34.5 46.5 Untreated 34.5 PN 12 Straight - -
G1'' Stainless Steel 316 Y...
In stock
Tameson 1 inch Stainless steel Teflon (PTFE) Angle seat spring closed Inner thread cylindrical... -20 0.4 200 40 22.5 - Yes No 90 75 Untreated 43 PN 40 Straight - Stainless steel 316 (1.4408)
G1'' Stainless Steel 304...
In stock
Tameson 1 inch Stainless steel FKM (FPM) Inline spring closed Inner thread cylindrical... -20 0.35 150 16 - - Yes No 83 55 Untreated 55 PN 16 Straight - Stainless steel 304 (1.4301)
G1-1/2'' Brass Check Valve...
£31.60 (£26.12 excl vat)
In stock
Tameson 1 1/2 inch Brass NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... -20 0.02 100 10 - 29.39 Yes No 70.5 74 Untreated 70.5 PN 10 Straight - -
G3/4'' Stainless Steel 316...
£71.26 (£58.89 excl vat)
In stock
Tameson 3/4 inch Stainless steel Teflon (PTFE) Angle seat spring closed Inner thread cylindrical... -20 0.4 200 40 17.4 - Yes No 75 62 Untreated 37 PN 40 Straight - Stainless steel 316 (1.4408)
G1-1/2'' Brass Foot Valve...
£35.73 (£29.53 excl vat)
In stock
Tameson 1 1/2 inch Brass NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... -20 0.02 60 - - - - - - - - - - - Yes -
check valves

check valves | tameson.co.uk

Check valves (also called non-return valve, one-way valve) are used to allow the flow of fluid in only one direction. They prevent the flow of fluid in the other direction.  Check valves work automatically and do not need to be operated. Most available types have a small spring to close the valve, the medium pressure in the forward direction opens the valve. Note that there is a minimum pressure required to open the valve (usually called cracking pressure).