... -acting. Two-position&two-port Brass discharge electromagnetic Solenoid valve :Brass discharge electromagnetic Solenoid valves are mainly used for the defrosting ... designs more reasonable.Operating principleWhile energized in coil, the electromagnetic power opens the small orifice. Then the pressure in ... ,R404A/507,air,water and oil.Optional voltage of solenoid coils: A.C.: 24V,36V,110V,220V,380V.D.C ...