Grundfos 25mm (1") Brass Foot Valve with Strainer

A non-return valve allows a medium to flow in only one direction and is fitted to ensure that the medium flows through a pipe in the right direction, where pressure conditions may otherwise cause reversed flow. The flow through the non-return valve causes a relatively large pressure drop, which has to be taken into account when designing the system.

There are different types of non-return valves, such as spring-loaded, swing type, and clapper type valves. Non-return valves are for example used with mixing loops in heating and cooling systems to ensure proper operation, and with domestic water systems to prevent backflow.

Grundfos ensures that reverse flow is not a problem in heating, water supply and wastewater applications, with non-return valves included at the design phase.

• Installed at a pump or at the bottom of a pipe line
• 25mm (1") female BSP threaded
• Allows pump to stay primed, letting liquid to flow in and keeping it from flowing back out