The Sporlan Controls 805609 Electric Evaporator Pressure Regulating Valve (CDST-7-7 M12) is a stepper motor-driven valve designed to precisely control evaporator pressure in commercial refrigeration and HVAC systems. Featuring 7/8" ODF connections and a 20-foot cable, it automatically adjusts refrigerant flow based on system pressure requirements to maintain stable operating conditions. https://www.partshnc.com/805609-sporlan-controls-cdst-7-7-odf-m12-20-s