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 Max pressure at 20 °C (bar) Valve shape Connection type Min pressure difference (bar) Min temperature (°C) Max temperature (°C) With lock spring With balance weight Kv value (m3/h) Valve bore (mm) Surface protection Width (mm) Height (mm) Model Article compression class Material quality With strainer basket
G1/4'' check valve...
£5.85 (£4.84 excl vat)
In stock
AZ Pneumatics 1/4 inch Brass FKM (FPM) 10 Inline spring closed Inner thread cylindrical... 0.1 0 110 Yes No 0.82 7 Untreated 13 34 Straight PN 10 - -
G1/2'' Brass Check Valve...
£7.69 (£6.36 excl vat)
In stock
Tameson 1/2 inch Brass NBR (nitrile rubber) 12 Inline spring closed Inner thread cylindrical... 0.02 -20 100 Yes No 4.22 - Untreated 34.5 47 Straight PN 12 - -
G1/8'' check valve...
£4.70 (£3.89 excl vat)
In stock
AZ Pneumatics 1/8 inch Brass FKM (FPM) 10 Inline spring closed Inner thread cylindrical... 0.1 0 110 Yes No 0.45 5.2 Untreated 16 39 Straight PN 10 - -
G1/2'' Stainless Steel 304...
£34.59 (£28.59 excl vat)
In stock
Tameson 1/2 inch Stainless steel FKM (FPM) 16 Inline spring closed Inner thread cylindrical... 0.25 -20 150 Yes No - - Untreated 66 32 Straight PN 16 Stainless steel 304 (1.4301) -
G1/2'' Brass Foot Valve NBR...
£9.79 (£8.09 excl vat)
In stock
Tameson 1/2 inch Brass NBR (nitrile rubber) - 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 Stainless steel FKM (FPM) 16 Inline spring closed Inner thread cylindrical... 0.35 -20 150 Yes No - - Untreated 72 45 Straight PN 16 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) 12 Inline spring closed Inner thread cylindrical... 0.02 -20 100 Yes No 2.11 - Untreated 34.5 46.5 Straight PN 12 - -
G1'' Stainless Steel 304...
In stock
Tameson 1 inch Stainless steel FKM (FPM) 16 Inline spring closed Inner thread cylindrical... 0.35 -20 150 Yes No - - Untreated 83 55 Straight PN 16 Stainless steel 304 (1.4301) -
G3/8'' Stainless Steel 304...
£29.88 (£24.69 excl vat)
In stock
Tameson 3/8 inch Stainless steel FKM (FPM) 16 Inline spring closed Inner thread cylindrical... 0.25 -20 150 Yes No - - Untreated 66 32 Straight PN 16 Stainless steel 304 (1.4301) -
G1'' Stainless Steel 316 Y...
In stock
Tameson 1 inch Stainless steel Teflon (PTFE) 40 Angle seat spring closed Inner thread cylindrical... 0.4 -20 200 Yes No - 22.5 Untreated 90 75 Straight PN 40 Stainless steel 316 (1.4408) -
G1-1/4'' Brass Check Valve...
£19.42 (£16.05 excl vat)
In stock
Tameson 1 1/4 inch Brass NBR (nitrile rubber) 10 Inline spring closed Inner thread cylindrical... 0.02 -20 100 Yes No 22.42 - Untreated 59.5 66.5 Straight PN 10 - -
G1-1/2'' Brass Check Valve...
£31.60 (£26.12 excl vat)
In stock
Tameson 1 1/2 inch Brass NBR (nitrile rubber) 10 Inline spring closed Inner thread cylindrical... 0.02 -20 100 Yes No 29.39 - Untreated 70.5 74 Straight PN 10 - -
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... 0.02 -20 60 - - - - - - - - - - Yes
G1/2'' Stainless Steel 316...
£64.36 (£53.19 excl vat)
In stock
Tameson 1/2 inch Stainless steel Teflon (PTFE) 40 Angle seat spring closed Inner thread cylindrical... 0.4 -20 200 Yes No - 11.5 Untreated 65 52 Straight PN 40 Stainless steel 316 (1.4408) -
G3/4'' Stainless Steel 316...
£71.26 (£58.89 excl vat)
In stock
Tameson 3/4 inch Stainless steel Teflon (PTFE) 40 Angle seat spring closed Inner thread cylindrical... 0.4 -20 200 Yes No - 17.4 Untreated 75 62 Straight PN 40 Stainless steel 316 (1.4408) -
check valves

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 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).