Non-Return Valves: Uses and Benefits​

Non-Return Valves: Uses and Benefits

Floodsafe Projects Ltd can offer a range of Non-Return Valves (NRVs) for a variety of uses and applications.

What Is A Non-Return Valve?

Non-Return Valves, also known as check valves, normally allow liquids (and gasses) to flow through them in only one direction. The valves have two openings in the body, one for fluid to enter and the other for fluid to leave. Non-Return Valves work automatically, which means that most do not have a handle or stem.

Different Types of Non Return Valves and Applications

Non-Return Valves are, typically, small and simple products. However, some are manufactured for specialist applications and have additional features such as rodent protection.

How Do Non-Return Valves Work?

Non-Return Valves stop the backflow of water and effluent into properties, businesses and homes via the sewage system during a flood, as well as preventing noxious fumes from entering the property.


One of the other key and unique features of some Non-Return Valves is they stop rats, mice, frogs, snakes and other rodents and vermin from entering properties thanks to a stainless steel inbuilt plate.


Non-Return Valves also have maintenance uses. They can be temporarily inserted into either clay or plastic drains and pipes and a lockable flap allows you to close down entry pipes to inspection chambers to allow essential maintenance to be carried out. The Non-Return Valve can then be re-used.



Please also see our page on non-backflow valves for more information.

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