Outer pipe diameter (mm)

Vacuum (bar) info

Max pressure at 20 °C (bar) info

Kv value (m3/h) info

With strainer basket

With lock spring

With balance weight

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 material Max pressure at 20 °C (bar) Valve shape Connection type Max temperature (°C) Min pressure difference (bar) Kv value (m3/h) With lock spring With balance weight Surface protection Valve bore (mm) Article compression class Width (mm) Model Height (mm) Min temperature (°C) Angle of non-return valve (°) Outer pipe diameter, all connections (mm) Material quality Vacuum (bar) Wrench width (mm) Check valve feature Approval Outer pipe diameter (mm) With strainer basket Diameter size (mm)
G1/4'' check valve...
In stock
AZ Pneumatics 1/4 inch Brass FKM (FPM) 10 Inline spring closed Inner thread cylindrical... 110 0.1 0.82 Yes No Untreated 7 PN 10 13 Straight 34 0 0 0 - - - - - - - -
G1/8'' check valve...
In stock
AZ Pneumatics 1/8 inch Brass FKM (FPM) 10 Inline spring closed Inner thread cylindrical... 110 0.1 0.45 Yes No Untreated 5.2 PN 10 16 Straight 39 0 0 0 - - - - - - - -
G3/8'' Brass Check Valve...
£8.49 (£7.02 excl vat)
In stock
Tameson 3/8 inch Brass NBR (nitrile rubber) 12 Inline spring closed Inner thread cylindrical... 100 0.02 2.11 - - Untreated 0 PN 12 34.5 Straight 46.5 -20 0 0 - - - - - - - -
G1/2'' Stainless Steel 316...
£66.10 (£54.63 excl vat)
In stock
Tameson 1/2 inch Stainless steel Teflon (PTFE) 40 Angle seat spring closed Inner thread cylindrical... 200 0.4 - - - Untreated 11.5 PN 40 65 Straight 52 -20 0 0 Stainless steel 316 (1.4408) - - - - - - -
G3/4'' Stainless Steel 316...
£73.18 (£60.48 excl vat)
In stock
Tameson 3/4 inch Stainless steel Teflon (PTFE) 40 Angle seat spring closed Inner thread cylindrical... 200 0.4 - - - Untreated 17.4 PN 40 75 Straight 62 -20 0 0 Stainless steel 316 (1.4408) - - - - - - -
G1/2'' Brass Check Valve...
In stock
Tameson 1/2 inch Brass NBR (nitrile rubber) 25 Inline spring closed Inner thread cylindrical... 100 0.04 4.74 - - - 15 PN 25 50 Straight 30 -20 0 0 - 0 0 - - - - -
G1/4'' Stainless Steel 304...
In stock
Mondeo 1/4 inch Stainless steel FKM (FPM) 16 Inline spring closed Inner thread cylindrical... 150 0.03 2.5 - - - 8 PN 16 56 Straight 32 -20 0 0 Stainless steel 304 (1.4301) 0 0 - - - - -
G1/2'' Stainless Steel 316...
In stock
Mondeo 1/2 inch Stainless steel FKM (FPM) 16 Inline spring closed Inner thread cylindrical... 150 0.03 6 - - - 15 PN 16 56 Straight 32 -20 0 0 Stainless steel 316 (1.4401) 0 0 Reinforced pin Drinking water, NSF ANSI 61 - - -
G1/2'' Stainless Steel 304...
In stock
Mondeo 1/2 inch Stainless steel FKM (FPM) 16 Inline spring closed Inner thread cylindrical... 150 0.03 6 - - - 15 PN 16 56 Straight 32 -20 0 0 Stainless steel 304 (1.4301) 0 0 - - - - -
G3/8'' Stainless Steel 316...
In stock
Tameson 3/8 inch Stainless steel Teflon (PTFE) 40 Angle seat spring closed Inner thread cylindrical... 200 0.4 - - - Untreated 11.5 PN 40 65 Straight 52 -20 0 0 Stainless steel 316 (1.4408) - - - - - - -
G3/4'' Stainless Steel 304...
£27.34 (£22.59 excl vat)
In stock
Tameson 3/4 inch Stainless steel FKM (FPM) - Inline spring closed Inner thread cylindrical... 150 0.03 - - - - 20 - - - 44 -20 - - - - - - - 0 Yes 0
G2'' Brass Check Valve NBR...
£34.47 (£28.49 excl vat)
In stock
Tameson 2 inch Brass NBR (nitrile rubber) 18 Inline spring closed Inner thread cylindrical... 100 0.04 46.7 - - - 50 - 81.5 Straight 79.5 -20 0 0 - 0 0 - - - - -
G1'' Brass Check Valve NBR...
£11.23 (£9.28 excl vat)
In stock
Tameson 1 inch Brass NBR (nitrile rubber) 25 Inline spring closed Inner thread cylindrical... 100 0.04 13.61 - - - 25 PN 25 65 Straight 43 -20 0 0 - 0 0 - - - - -
G3/8'' Stainless Steel 304...
£23.66 (£19.55 excl vat)
In stock
Tameson 3/8 inch Stainless steel FKM (FPM) - Inline spring closed Inner thread cylindrical... 150 0.03 - - - - 10 - - - 32 -20 - - - - - - - 0 Yes 0
G1/2'' Stainless Steel 304...
£22.16 (£18.32 excl vat)
In stock
Tameson 1/2 inch Stainless steel FKM (FPM) - Inline spring closed Inner thread cylindrical... 150 0.03 - - - - 15 - - - 32 -20 - - - - - - - 0 Yes 0
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).