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.
Available Models (With Strainer, Without Strainer)
HS4A
HS4W
Available Sizes (With Strainer, Without Strainer)
Size: 3/4", 20mm
Size: 1"0, 25mm
Size: 1-1/4", 32mm
Size: 1-1/2", 40mm
Size: 2"0, 50mm
Size: 2-1/2", 65mm
Size: 3"0, 80mm
Size: 4"0, 100mm
Size: 5"0, 125mm
Size: 6"0, 150mm
HS4A Solenoid Valve, Hansen Technologies Ammonia Refrigeration