Sump and sewage diaphragm switches sense pressure against the diaphragm to detect how much water is present in the basin. as the water level rises in the sump basin, the air pressure pushing against the diaphragm builds within the switch. the diaphragm switch turns on when the water rises to a specific water level and the pump starts.
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Price quantity ; 90mm slide valve: 620-90 : $138.00 ex gst storm water and dwv (sewer) pipe slide valves quantity. 100mm slide valve ... pvc plastic push/pull valves that are water tight, not for pressure applications. glue, socket joint for storm water or dwv (sewer) pipe connections.
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