1078/4 1078/4A6 1078/4A7 1/2'' ODS Refrigeration Solenoid Valve

1078/4 1078/4A6 1078/4A7 1/2'' ODS Refrigeration Solenoid Valve

The shown is castel type 1078/4 solenoid valve, 1/2'' ODS solder port size, 2 way normally closed, 220/230V AC (50/60Hz), 240V AC voltages (other voltages can be customized), ordering code: 1078/4, 1078/4S, 1078/4A6, 1078/4A7.

Refrigeration solenoid valves are typically used in industrial refrigeration and air conditioning systems to control refrigerant flow. At the heart of any solenoid valve is an electrically-charged solenoid coil, which generates a magnetic field to open and close the valve. Thermstatic expansion valves also control refrigerant liquid flow, preventing refrigerant floodback into the evaporator.

1. Direct-acting solenoid valve
Principle: When energized, the solenoid generates electromagnetic force to lift the closing member from the valve seat, and the valve opens; when the power is off, the electromagnetic force disappears, and the spring presses the closing member on the valve seat and the valve closes.
Features: It can work normally under vacuum, negative pressure and zero pressure, but the diameter generally does not exceed 25mm.

2. Distributed direct-acting solenoid valve
Principle: It is a principle that combines direct action and pilot type. When there is no pressure difference between the inlet and the outlet, the electromagnetic force directly lifts the pilot small valve and the main valve closing member upwards in turn, and the valve opens. When the inlet and outlet reach the starting pressure difference, after power on, the electromagnetic force pilots the small valve, the pressure in the lower chamber of the main valve rises, and the pressure in the upper chamber drops, so that the pressure difference pushes the main valve upward; when the power is off, the pilot valve uses a spring The force or medium pressure pushes the closing piece and moves downward to close the valve.
Features: It can also be operated under zero pressure difference or vacuum and high pressure, but the power is large, and it must be installed horizontally.

Dimension & Data of Castel Type Solenoid Valve:

Product video of 1078/4 Castel Type Solenoid Valve:

More Refrigeration Valve For you to choose:

   Danfoss Type Solenoid Valve    Ammonia Refrigeration Valve       Castel Type Solenoid Valve

Refrigeration Solenoid Valve Coil          Expansion Valve               Refrigerator Solenoid Valve

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