Comparison of Normally Open Solenoid Valve and Normally Closed Solenoid Valve

Solenoid valve refers to an actuator used for flow control. According to the state of the solenoid valve, the solenoid valve can be divided into two types: normally open solenoid valve and normally closed solenoid valve. "On" and "Off" refer to the state of the solenoid valve when the solenoid is not energized. For some special functions, the self-holding solenoid valve is a typical solenoid valve, which is called a normally open (closed) solenoid valve.

Normally open solenoid valve

When the solenoid is energized, the normally open solenoid valve is closed; when the solenoid is disconnected, the normally closed solenoid valve is opened. If the solenoid valve needs to be opened for a long time, the normally open solenoid valve will be the ideal choice. If you need to open or close the solenoid valve for a long time, the bistable solenoid valve is more suitable. In terms of voltage, normally open solenoid valves use AC (380V, 240V, 220V, 24V) and DC (110V, 24V).

Normally open solenoid valves are suitable for actuators that use steam as the heat medium and automatically control the temperature. The normally open solenoid valve can perform two-bit automatic control and remote control of steam heaters, radiators, dryers and other steam devices. Normally open solenoid valves are widely used in printing and dyeing, textile, printing and dyeing, food, medicine, tobacco, cement products, petrochemical, metallurgy and other industries.

Normally closed solenoid valve

Normally closed solenoid valve means that the electromagnetic coil is closed when energized and opened when the electromagnetic coil is disconnected. Normally closed solenoid valves suitable for international standard voltages are AC 380V, 240v, 220 V, 24 V, or DC 110V, 24 V.

The difference between normally open solenoid valve and normally closed solenoid valve

Model

How to distinguish between the normally open solenoid valve and normally closed solenoid valve in the model? Models usually consist of different letters, which have different meanings.

K means normally open and normally closed does not require letters.

ZC stands for solenoid valve,

F explosion-proof,

X is pilot type,

The number usually represents the size of the valve.

The above information is provided by irrigation electromagnetic valve factory.