brass check valves

A brass check valve allows fluid to flow only in one direction. This prevents the flow of fluid in the back direction, which could cause contamination or damage to other components. Check valves work automatically and do not need to be... Read more Read more

Product Brand Connection size Material Max pressure at 20 °C (bar) Seal material Valve shape Connection type Min pressure difference (bar) Kv value (m3/h) Min temperature (°C) Max temperature (°C) With lock spring With balance weight Valve bore (mm) Surface protection Width (mm) Model Height (mm) Article compression class Angle of non-return valve (°) Outer pipe diameter, all connections (mm) Vacuum (bar) Wrench width (mm)
G1/4'' check valve...
In stock
AZ Pneumatics 1/4 inch Brass 10 FKM (FPM) Inline spring closed Inner thread cylindrical... 0.1 0.82 0 110 Yes No 7 Untreated 13 Straight 34 PN 10 0 0 - -
G1/8'' check valve...
In stock
AZ Pneumatics 1/8 inch Brass 10 FKM (FPM) Inline spring closed Inner thread cylindrical... 0.1 0.45 0 110 Yes No 5.2 Untreated 16 Straight 39 PN 10 0 0 - -
G3/8'' Brass Check Valve...
£8.49 (£7.02 excl vat)
In stock
Tameson 3/8 inch Brass 12 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.02 2.11 -20 100 - - 0 Untreated 34.5 Straight 46.5 PN 12 0 0 - -
G1/2'' Brass Check Valve...
In stock
Mondeo 1/2 inch Brass 25 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 4.74 -20 100 - - 15 - 50 Straight 30 PN 25 0 0 0 0
G2'' Brass Check Valve NBR...
£34.47 (£28.49 excl vat)
In stock
Mondeo 2 inch Brass 18 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 46.7 -20 100 - - 50 - 81.5 Straight 79.5 - 0 0 0 0
G1'' Brass Check Valve NBR...
£11.23 (£9.28 excl vat)
In stock
Mondeo 1 inch Brass 25 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 13.61 -20 100 - - 25 - 65 Straight 43 PN 25 0 0 0 0
G3/4'' Brass Check Valve...
In stock
Mondeo 3/4 inch Brass 25 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 8.7 -20 100 - - 20 - 57 Straight 36.5 PN 25 0 0 0 0
G3/4'' Brass Check Valve...
+3 days
Tameson 3/4 inch Brass 12 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.02 7.92 -20 100 - - 0 Untreated 42 Straight 53 PN 12 0 0 - -
G1 1/4'' Brass Check Valve...
+14 days
Mondeo 1 1/4 inch Brass 18 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 21.38 -20 100 - - 32 - 70 Straight 53 - 0 0 0 0
G1 1/2'' Chromed Brass...
£29.30 (£24.22 excl vat)
+14 days
Mondeo 1 1/2 inch Brass 18 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 35.3 -20 100 - - 40 Chromium-plated 93 Straight 62.5 - 0 0 0 0
G2'' Chromed Brass Check...
+14 days
Mondeo 2 inch Brass 18 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 50.6 -20 100 - - 50 Chromium-plated 100 Straight 77.5 - 0 0 0 0
G3'' Brass Check Valve NBR...
£114.94 (£94.99 excl vat)
+14 days
Mondeo 3 inch Brass 12 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 111.5 -20 100 - - 80 - 113 Straight 124 - 0 0 0 0
G1 1/4'' Chromed Brass...
£22.29 (£18.42 excl vat)
+14 days
Mondeo 1 1/4 inch Brass 18 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 22.1 -20 100 - - 32 Chromium-plated 82 Straight 51.5 - 0 0 0 0
G2 1/2'' Brass Check Valve...
+14 days
Mondeo 2 1/2 inch Brass 12 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 78.77 -20 100 - - 65 - 104 Straight 104 - 0 0 0 0
G1 1/2'' Brass Check Valve...
+14 days
Mondeo 1 1/2 inch Brass 18 NBR (nitrile rubber) Inline spring closed Inner thread cylindrical... 0.04 31.63 -20 100 - - 40 - 75.5 Straight 64.5 - 0 0 0 0
brass check valves

brass check valves

A brass check valve allows fluid to flow only in one direction. This prevents the flow of fluid in the back direction, which could cause contamination or damage to other components. 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). The housing of these valves is made out of brass, which is a cost-effective alternative to stainless steel for many applications. To further understand check valves, read our technical article or contact us.

Brass housing

Brass is used as the housing material. Brass is an alloy of copper and zinc and has great mechanical properties. Brass check valves are known for their durability and can be used with drinking water, gas, mineral oils, compressed air and many other non-aggressive media. But they are not suitable for use with salt water or distilled water due to the risk of dezincification. Dezincification reduces the mechanical strength of the brass by causing the zinc to be removed from the alloy resulting in a porous structure.