Help & Advice

What's the difference between a Check Valve (CV) and a Non Return Valve (NRV)?

A check valve is a specific type of valve which can prevent backflow from occurring.

It has to be tested and meet very strict criteria, which ensures fluids are not able to be siphoned back into drinking water systems.

Non return valves are similar in design to a check valve but are not able to meet the strict criteria of a check valve.

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