The Shipco Pumps SDPS00290 Float Switch NEMA 1 is an external liquid-level control device designed for compatible Shipco condensate return and boiler feed pumping equipment. It operates through a float mechanism that responds to rising and falling liquid levels, automatically signaling the pump to start or stop at preset points. This switch is used in HVAC steam systems, including con... https://www.partshnc.com/shipco-pumps-sdps00290-nema1-float-switch