Landscape · L-JKA72

PVC Flow Sensor Installation Detail

Materials

Brick

Elements

Waterproofing / Flashing Connections / Plates Reinforcing

Connections

Bolted Connection

About this detail

A PVC flow sensor is installed in a schedule 80 PVC mainline system housed within an 18-inch deep, 14" x 19" valve box with a bolt-down lid. The flow sensor must be installed with the insert positioned vertically at the top and the body tee horizontally, maintaining a minimum four-inch clearance below the lid. The assembly rests on four brick supports over an eight-inch deep, 3/4-inch pea gravel sump. The upstream mainline requires a minimum straight run of ten times the sensor size, while the downstream requires five times the size. Waterproof wire connections with observed polarity link the sensor cable, which requires thirty-six inches of extra length and must be run in a one-inch conduit to the controller.

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