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 Max pressure at 20 °C (bar) Seal material Valve shape Connection type Min pressure difference (bar) Material Kv value (m3/h) Min temperature (°C) Max temperature (°C) With lock spring With balance weight Valve bore (mm) Width (mm) Height (mm) Surface protection Model Article compression class Angle of non-return valve (°) Outer pipe diameter, all connections (mm) With strainer basket Diameter size (mm) Outer pipe diameter (mm) Material quality
G1/4'' check valve...
In stock
AZ Pneumatics 1/4 inch 10 FKM (FPM) Inline spring closed Inner thread cylindrical... 0.1 Brass 0.82 0 110 Yes No 7 13 34 Untreated Straight PN 10 0 0 - - - -
G1/2'' Brass Check Valve...
+2 days
Tameson 1/2 inch 12 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.02 Brass 4.22 -20 100 Yes No 0 34.5 47 Untreated Straight PN 12 0 0 - - - -
G1/8'' check valve...
In stock
AZ Pneumatics 1/8 inch 10 FKM (FPM) Inline spring closed Inner thread cylindrical... 0.1 Brass 0.45 0 110 Yes No 5.2 16 39 Untreated Straight PN 10 0 0 - - - -
G1'' Brass Check Valve NBR...
In stock
Tameson 1 inch 12 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.02 Brass 11.67 -20 100 Yes No 0 47.5 60.5 Untreated Straight PN 12 0 0 - - - -
G3/4'' Brass Check Valve...
In stock
Tameson 3/4 inch 12 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.02 Brass 7.92 -20 100 Yes No 0 42 53 Untreated Straight PN 12 0 0 - - - -
G1'' Brass Foot Valve NBR...
In stock
Tameson 1 inch - NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.02 Brass - -20 60 - - 0 - 0 - - - - - Yes 0 0 -
G1/2'' Stainless Steel 304...
In stock
Tameson 1/2 inch 16 FKM (FPM) Inline spring closed Inner thread cylindrical... 0.25 Stainless steel - -20 150 Yes No 0 66 32 Untreated Straight PN 16 0 0 - - - Stainless steel 304 (1.4301)
G1/2'' Brass Foot Valve NBR...
Not in stock
Tameson 1/2 inch - NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.02 Brass - -20 60 - - 0 - 0 - - - - - Yes 0 0 -
G1'' Stainless Steel 304...
In stock
Tameson 1 inch 16 FKM (FPM) Inline spring closed Inner thread cylindrical... 0.35 Stainless steel - -20 150 Yes No - 83 55 Untreated Straight PN 16 - - - - - Stainless steel 304 (1.4301)
G3/8'' Brass Check Valve...
In stock
Tameson 3/8 inch 12 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.02 Brass 2.11 -20 100 Yes No 0 34.5 46.5 Untreated Straight PN 12 0 0 - - - -
G3/4'' Stainless Steel 304...
In stock
Tameson 3/4 inch 16 FKM (FPM) Inline spring closed Inner thread cylindrical... 0.35 Stainless steel - -20 150 Yes No - 72 45 Untreated Straight PN 16 - - - - - Stainless steel 304 (1.4301)
G1'' Stainless Steel 316 Y...
In stock
Tameson 1 inch 40 Teflon (PTFE) Angle seat spring closed Inner thread cylindrical... 0.4 Stainless steel - -20 200 Yes No 22.5 90 75 Untreated Straight PN 40 0 0 - - - Stainless steel 316 (1.4408)
G1-1/4'' Brass Check Valve...
In stock
Tameson 1 1/4 inch 10 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.02 Brass 22.42 -20 100 Yes No 0 59.5 66.5 Untreated Straight PN 10 0 0 - - - -
G1-1/2'' Brass Check Valve...
In stock
Tameson 1 1/2 inch 10 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.02 Brass 29.39 -20 100 Yes No 0 70.5 74 Untreated Straight PN 10 0 0 - - - -
G1/2'' Stainless Steel 316...
In stock
Tameson 1/2 inch 40 Teflon (PTFE) Angle seat spring closed Inner thread cylindrical... 0.4 Stainless steel - -20 200 Yes No 11.5 65 52 Untreated Straight PN 40 0 0 - - - 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).