Recommended use of the WARNER security system to detect any irregularities and effect automatic shutdown of pumps Made totally in white ABS, with self-adhesive gaskets and screws. 2″ side connections which can be plugged from the inside for pressure testing. 11/2″ bottom connection with plug for fitting the hydrostatic relief valve & drainage tube. Suction velocity 0.5 m/sec. Recommended max. flow: 13 m3/h. Installed flush with floor bottom for total drainage.