A trap primer installation is mounted on a wall adjacent to a finished floor. The assembly incorporates a water supply line connecting to a trap primer valve, an inline check valve and vacuum breaker device, and a primer distribution line routed down to discharge into a floor drain trap. The piping passes through the wall construction and maintains a clear vertical drop to the drain trap. Key components include the supply piping, control valve, backflow preventer, trap primer unit, distribution tubing, and floor drain connection.
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