Mechanical · M-ZY8EH

Water Feed with Backflow

Elements

Floors / Slabs Drainage Connections / Plates

About this detail

The water feed line incorporates a backflow prevention device installed by the plumbing contractor, followed by an isolation valve, a union connection, a pressure reducing valve, another union, and an isolation valve normally closed. A pressure gauge monitors line pressure before the mechanical contractor tie-in. The precharged bladder expansion tank connects to the return water line through a union connection, an isolation valve with hose bib connection, and an isolation valve with locked guard. A pressure relief valve routes discharge to a floor drain, and a drain valve is positioned at the base of the expansion tank.

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