In premises built after 1st July 1999 if a double check valve is to be used as point of use backflow protection for a hose union tap categorised as a fluid category 3 risk, as shown below this must be installed inside the property and if required protected from freezing.
Uncontrolled if downloaded. This is informative, non-statutory guidance and intended for general guidance purposes only; it is subject to change.
Compliance with this information should not be relied upon as guaranteeing no enforcement action will be taken by water undertakers. Water Regs UK accepts no liability for loss, indirect or consequential loss arising from or in connection with this guidance document.
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