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 Seal Material Max pressure at 20 °C (bar) Valve shape Connection type Min. pressure difference (bar) Valve bore (mm) Kv value (m3/h) Min temperature (°C) Max temperature (°C) Model With lock spring With balance weight Surface protection Article compression class Width (mm) Depth (mm) Height (mm) With strainer basket Material quality
G1/4'' check valve...
£5.85 (£4.84 excl vat)
In stock
AZ Pneumatics 1/4 inch FKM (FPM) Brass 10 Inline spring closed Inner thread cylindrical... 0.1 7 0.82 0 110 Straight Yes No Untreated PN 10 13 15 34 - -
G1/2'' Brass Check Valve...
£7.69 (£6.36 excl vat)
In stock
Tameson 1/2 inch NBR (nitrile rubber) Brass 12 Inline spring closed Inner thread cylindrical... 0.02 - 4.22 -20 100 Straight Yes No Untreated PN 12 34.5 34.5 47 - -
G1/8'' check valve...
£4.70 (£3.89 excl vat)
In stock
AZ Pneumatics 1/8 inch FKM (FPM) Brass 10 Inline spring closed Inner thread cylindrical... 0.1 5.2 0.45 0 110 Straight Yes No Untreated PN 10 16 18 39 - -
G1'' Brass Check Valve NBR...
£12.29 (£10.16 excl vat)
In stock
Tameson 1 inch NBR (nitrile rubber) Brass 12 Inline spring closed Inner thread cylindrical... 0.02 - 11.67 -20 100 Straight Yes No Untreated PN 12 47.5 47.5 60.5 - -
G1/2'' Brass Foot Valve NBR...
£9.81 (£8.10 excl vat)
In stock
Tameson 1/2 inch NBR (nitrile rubber) Brass - Inline spring closed Inner thread cylindrical... 0.02 - - -20 60 - - - - - - - - Yes -
G1/2'' Stainless Steel 304...
£26.43 (£21.84 excl vat)
In stock
Tameson 1/2 inch FKM (FPM) Stainless steel 16 Inline spring closed Inner thread cylindrical... 0.25 - - -20 150 Straight Yes No Untreated PN 16 66 32 32 - Stainless steel 304 (1.4301)
G1'' Brass Foot Valve NBR...
£15.78 (£13.04 excl vat)
In stock
Tameson 1 inch NBR (nitrile rubber) Brass - Inline spring closed Inner thread cylindrical... 0.02 - - -20 60 - - - - - - - - Yes -
G3/4'' Stainless Steel 304...
£34.47 (£28.49 excl vat)
In stock
Tameson 3/4 inch FKM (FPM) Stainless steel 16 Inline spring closed Inner thread cylindrical... 0.35 - - -20 150 Straight Yes No Untreated PN 16 72 45 45 - Stainless steel 304 (1.4301)
G3/8'' Stainless Steel 304...
£29.88 (£24.69 excl vat)
In stock
Tameson 3/8 inch FKM (FPM) Stainless steel 16 Inline spring closed Inner thread cylindrical... 0.25 - - -20 150 Straight Yes No Untreated PN 16 66 32 32 - Stainless steel 304 (1.4301)
G3/8'' Brass Check Valve...
£8.26 (£6.83 excl vat)
In stock
Tameson 3/8 inch NBR (nitrile rubber) Brass 12 Inline spring closed Inner thread cylindrical... 0.02 - 2.11 -20 100 Straight Yes No Untreated PN 12 34.5 34.5 46.5 - -
G3/4'' Brass Check Valve...
£9.87 (£8.16 excl vat)
In stock
Tameson 3/4 inch NBR (nitrile rubber) Brass 12 Inline spring closed Inner thread cylindrical... 0.02 - 7.92 -20 100 Straight Yes No Untreated PN 12 42 42 53 - -
G1'' Stainless Steel 316 Y...
In stock
Tameson 1 inch Teflon (PTFE) Stainless steel 40 Angle seat spring closed Inner thread cylindrical... 0.4 22.5 - -20 200 Straight Yes No Untreated PN 40 90 43 75 - Stainless steel 316 (1.4408)
G1-1/2'' Brass Check Valve...
£31.60 (£26.12 excl vat)
In stock
Tameson 1 1/2 inch NBR (nitrile rubber) Brass 10 Inline spring closed Inner thread cylindrical... 0.02 - 29.39 -20 100 Straight Yes No Untreated PN 10 70.5 70.5 74 - -
G1'' Stainless Steel 304...
In stock
Tameson 1 inch FKM (FPM) Stainless steel 16 Inline spring closed Inner thread cylindrical... 0.35 - - -20 150 Straight Yes No Untreated PN 16 83 55 55 - Stainless steel 304 (1.4301)
G3/4'' Stainless Steel 316...
£71.26 (£58.89 excl vat)
In stock
Tameson 3/4 inch Teflon (PTFE) Stainless steel 40 Angle seat spring closed Inner thread cylindrical... 0.4 17.4 - -20 200 Straight Yes No Untreated PN 40 75 37 62 - Stainless steel 316 (1.4408)
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).