HS4D/3E Hansen 1-1/4" (32mm) 2-Step Solenoid CE-CATI Mod A EF100

Hansen Technologies introduces the HS4D Two Step Solenoid Valve. The HS4D is based on the same strength, reliability, design principles and craftsmanship as the standard Hansen HS4A Solenoid Valve — with added versatility. The two step solenoid design provides three positions for the valve: fully closed, partially open (1% stroke), and fully open. These valves are normally closed and will revert to the closed position in the event of a power failure. The valve can be opened via the manual opening stem for pump-out during maintenance. Similar to the standard HS4A, the HS4D is superior in its ability to overcome dirt and sticky oil during opening, as well as function in an oil-free "dry" system.