... is opened and closed. It adjusts flow rate and pressure, keeping these constant. This device automatically stops the pump ... endurance≥100,000timesElectrical endurance≥50,000timesProtection settingIP68CSUsage:* In line water pressure boosting.* Pumping water from shallow well, rain tank, ... reference Cable/Mini Float Switch Water pump control Air pressure control RV/RZ/RA Micro switch Saipwell, the best ...