Hansen HS4A/0, 3/4 (20MM) Solenoid Valve for Refrigerant

These advanced design, strong bodied, precision manufactured solenoid valves control the on-off flow of refrigerant. They are superior in their ability to overcome dirt and sticky oil during opening and closing, and operate smoothly even in an oil-free "dry" system. When electrically energized, the upstream pressure is ported through the pilot solenoid to the top of the piston to push it downward and open the main valve seat wide; when de-energized, pressure is no longer ported to the top of the piston and a spring closes the main valve seat to stop flow in the arrow direction on the valve body.Key Features:Encapsulated CoilStrong Ductile Iron or Steel BodyReliable Teflon SeatManual Opening StemDirt Wiping Teflon Seal on Disc PistonStainless Steel Closing SpringAdditional Features:Tolerant of dry systemsTeflon main & pilot seatsEncapsulated Hansen standard coilHeavy duty, pilot operation300 psi MOPD (20.7 bar), 500 psi (34.4 bar) for CO2Simple Serviceable designAvailable close-coupled strainer/check valveNon-asbestos gasketsCSA certified statusCE available for 1-1/4" (32mm) and largerWireless pilot lightsWeld-in-line Available; Contact Factory