The John Guest Double Check Non-Return Valve is designed for the push-fit connection of plastic and copper pipe. The double check valve only allows water to flow through in one direction, therefore, preventing backflow of potential contaminants.
To install, simply push the valve fully on to the pipe. Should the need arise to demount the connection push the collet towards the body of the fitting and pull the pipe to release. Installation can be reduced by around 40% against traditional fixing methods.
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