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 Valve shape Min pressure difference (bar) Connection type Seal Max pressure at 20 °C (bar) Valve bore (mm) Kv value (m3/h) Min temperature (°C) Max temperature (°C) With lock spring With balance weight Model Surface protection Article compression class Height (mm) Width (mm) With strainer basket Material quality
G1/4'' check valve...
In stock
AZ Pneumatics 1/4 inch Brass Inline spring closed 0.1 Inner thread cylindrical... FKM (FPM) 10 7 0.82 0 110 Yes No Straight Untreated PN 10 34 13 - -
G1/2'' Brass Check Valve...
In stock
Tameson 1/2 inch Brass Inline spring closed 0.02 Inner thread cylindrical... NBR (nitrile rubber) 12 - 4.22 -20 100 Yes No Straight Untreated PN 12 47 34.5 - -
G1/8'' check valve...
In stock
AZ Pneumatics 1/8 inch Brass Inline spring closed 0.1 Inner thread cylindrical... FKM (FPM) 10 5.2 0.45 0 110 Yes No Straight Untreated PN 10 39 16 - -
G1'' Brass Check Valve NBR...
In stock
Tameson 1 inch Brass Inline spring closed 0.02 Inner thread cylindrical... NBR (nitrile rubber) 12 - 11.67 -20 100 Yes No Straight Untreated PN 12 60.5 47.5 - -
G1'' Brass Foot Valve NBR...
In stock
Tameson 1 inch Brass Inline spring closed 0.02 Inner thread cylindrical... NBR (nitrile rubber) - - - -20 60 - - - - - - - Yes -
G3/4'' Brass Check Valve...
In stock
Tameson 3/4 inch Brass Inline spring closed 0.02 Inner thread cylindrical... NBR (nitrile rubber) 12 - 7.92 -20 100 Yes No Straight Untreated PN 12 53 42 - -
G1/2'' Stainless Steel 304...
In stock
Tameson 1/2 inch Stainless steel Inline spring closed 0.25 Inner thread cylindrical... FKM (FPM) 16 - - -20 150 Yes No Straight Untreated PN 16 32 66 - Stainless steel 304 (1.4301)
G1/2'' Brass Foot Valve NBR...
In stock
Tameson 1/2 inch Brass Inline spring closed 0.02 Inner thread cylindrical... NBR (nitrile rubber) - - - -20 60 - - - - - - - Yes -
G3/4'' Stainless Steel 304...
In stock
Tameson 3/4 inch Stainless steel Inline spring closed 0.35 Inner thread cylindrical... FKM (FPM) 16 - - -20 150 Yes No Straight Untreated PN 16 45 72 - Stainless steel 304 (1.4301)
G3/8'' Brass Check Valve...
In stock
Tameson 3/8 inch Brass Inline spring closed 0.02 Inner thread cylindrical... NBR (nitrile rubber) 12 - 2.11 -20 100 Yes No Straight Untreated PN 12 46.5 34.5 - -
G1'' Stainless Steel 304...
In stock
Tameson 1 inch Stainless steel Inline spring closed 0.35 Inner thread cylindrical... FKM (FPM) 16 - - -20 150 Yes No Straight Untreated PN 16 55 83 - Stainless steel 304 (1.4301)
G3/8'' Stainless Steel 304...
In stock
Tameson 3/8 inch Stainless steel Inline spring closed 0.25 Inner thread cylindrical... FKM (FPM) 16 - - -20 150 Yes No Straight Untreated PN 16 32 66 - Stainless steel 304 (1.4301)
G1'' Stainless Steel 316 Y...
In stock
Tameson 1 inch Stainless steel Angle seat spring closed 0.4 Inner thread cylindrical... Teflon (PTFE) 40 22.5 - -20 200 Yes No Straight Untreated PN 40 75 90 - Stainless steel 316 (1.4408)
G1-1/4'' Brass Check Valve...
In stock
Tameson 1 1/4 inch Brass Inline spring closed 0.02 Inner thread cylindrical... NBR (nitrile rubber) 10 - 22.42 -20 100 Yes No Straight Untreated PN 10 66.5 59.5 - -
G1-1/2'' Brass Check Valve...
In stock
Tameson 1 1/2 inch Brass Inline spring closed 0.02 Inner thread cylindrical... NBR (nitrile rubber) 10 - 29.39 -20 100 Yes No Straight Untreated PN 10 74 70.5 - -
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).