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

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

Solenoid valves are divided into normally closed solenoid valves There are two types of valves and normally open solenoid valves:

1. Normally closed solenoid valve refers to the air path when the coil is not energized It is broken;

2. Normally open solenoid valve means that the air path is open when the coil is not energized.

Normally open solenoid valves are usually selected based on the length of continuous working time Or normally closed solenoid valve:

1. When the solenoid valve needs to be opened for a long time and lasts for more than For the closing time, a normally open solenoid valve should be selected.

2. If the opening time is short or the opening and closing time is not long, choose a normally closed solenoid valve.

Normally closed solenoid valve working principle:Electrify the coil and connect the air path;once the coil is broken Electricity and gas circuit will be disconnected.

Normally open solenoid valve works Principle: When the coil is energized, the gas circuit is disconnected;once the coil is powered off, the gas circuit will be connected.

When the valve is not energized, it is a normally-open type when it is in the open-circuit state, and it is a normally-closed type when it is in a closed-circuit state. The working principle is to rely on the Solenoid valve The coil power supply generates magnetic force to drive the valve core to connect or disconnect the pipeline.

Normally open and normally closed are just switches, that is, the two states of the relay, The two states of normally open and normally closed can be set by yourself. For example, when it is lower than a certain pressure value, it is the normally open state. When it is higher than this pressure value, it is a switch action, and the normally open becomes normally closed.

It can also be in the normally closed state when it is lower than a certain pressure value. A pressure value higher than this is a switch action, from normally closed to normally open. It depends on how it is set.

Two-way valves are divided into normally open and normally closed, but It's either a solenoid valve or a manual valve. I've never seen two types of controls. Reversing the valve core of the normally open valve makes it normally closed.

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