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How can I check that a solenoid valve is working properly?

How to check that a solenoid valve is working properly

There are several components in a hydraulic circuit. One of these is the solenoid valve, an electromagnetic device which uses electrical current to produce a magnetic field. Through this action, a solenoid can be switched on. But how does a solenoid valve work? What is its role? How do you check that a solenoid valve is working properly? What are the steps to follow? We take a look.

Solenoid valves: why use them and when?

A solenoid valve can be used to open or close a circuit. It may also be necessary if you want to mix liquids. If you need to control the way the liquid flows, using a solenoid valve is useful. A solenoid valve can be used in a number of ways: - In agriculture: on irrigation systems, theuse of a solenoid valve can lead to significant water savings. The reason for these savings is simple: the solenoid valve has a short response time. - In compressors. Here, the solenoid valve reduces the torque on the motor by unloading the compressor. Do you need to use a solenoid valve? As you can imagine, it's important to choose one carefully. Certain criteria need to be taken into account to make sure you choose the right solenoid valve. To guide you in your choice, here are a few parameters to check when buying your solenoid valve:

- The type of fluid it can be used with.

- The type of solenoid valve: it may be two-way or multi-way.

To find out, look at the numbers on the label. In principle, the one that appears first refers to the number of channels.

- Normally open or normally closed solenoid valves.

- Solenoid valve protection rating.

Having seen how to choose a solenoid valve and when to use it, we now turn to the elements to consider when checking its operation. As you will see, this stage is not very complicated in itself and requires very little specific equipment.

Checking the operation of a solenoid valve: how do you go about it?

If your solenoid valve remains open, it's probably because it's stuck. Do you have an ohmmeter? You can analyse the coil and its operation. Don't have an ohmmeter handy? You can use a torch or a battery. This will allow you to check the continuity of the coil. It is possible to force a solenoid valve. To do this, simply turn the solenoid a quarter or half turn. But be careful! It must be turned anti-clockwise. Need to close the solenoid valve? Turn the solenoid clockwise again. Once it's closed on the solenoid valve, you're all set. As you can see, it's perfectly possible to check the operation of a solenoid valve. If you need to test your hydraulic distributor, this is also possible. To find out more about this step, please refer to our dedicated article: how to test a hydraulic distributor. The various steps involved in this test are explained in detail. The equipment to be used is also specified for an effective test of your hydraulic distributor.

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