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 Seal material Max pressure at 20 °C (bar) Vacuum (bar) Recommended for Connection type Max temperature (°C) Min temperature (°C) Min pressure difference Kv value (m3/h) Valve shape Valve bore Model Width Height (mm) Article compression class Surface protection
G3/4'' Brass Check Valve...
In stock
Tameson 3/4 inch Brass NBR (nitrile rubber) 25 0 Air, Alcohols, Lubricant,... Inner thread cylindrical... 100 -20 0.04 8.7 Inline spring closed 20 Straight 57 36.5 PN 25 -
G1'' Brass Check Valve NBR...
In stock
Tameson 1 inch Brass NBR (nitrile rubber) 25 0 Air, Alcohols, Lubricant,... Inner thread cylindrical... 100 -20 0.04 13.61 Inline spring closed 25 Straight 65 43 PN 25 -
G1 1/2'' Brass Check Valve...
+28 days
Tameson 1 1/2 inch Brass NBR (nitrile rubber) 18 0 Air, Alcohols, Lubricant,... Inner thread cylindrical... 100 -20 0.04 31.63 Inline spring closed 40 Straight 75.5 64.5 - -
G1 1/2'' Chromed Brass...
+28 days
Tameson 1 1/2 inch Brass NBR (nitrile rubber) 18 0 Air, Alcohols, Lubricant,... Inner thread cylindrical... 100 -20 0.04 35.3 Inline spring closed 40 Straight 93 62.5 - Chromium-plated
G3'' Brass Check Valve NBR...
+28 days
Tameson 3 inch Brass NBR (nitrile rubber) 12 0 Air, Alcohols, Lubricant,... Inner thread cylindrical... 100 -20 0.04 111.5 Inline spring closed 80 Straight 113 124 - -
G4'' Brass Check Valve NBR...
+28 days
Tameson 4 inch Brass NBR (nitrile rubber) 12 0 Air, Alcohols, Lubricant,... Inner thread cylindrical... 100 -20 0.04 176.9 Inline spring closed 100 Straight 132 155 - -
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.