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When choosing a solenoid valve, you will need to know what type of media it will be used for. As a general rule solenoid valves are designed to operate with media without solid particles such as water, oil, petroleum products, steam, compressed air or heat transfer fluids. This important information allows you to define the materials your solenoid valve will be made of. Most solenoid valves are made of brass (ideal for water, fuel, air), stainless steel (for corrosive liquids or gases, food product liquids, or whether inserted in an ATEX environment) or plastic (mainly in the food and chemical sectors).

To avoid any risk of malfunction due to the presence of solid particles, also called impurities, we recommend that you use an upstream filter by Shavo before the solenoid valve.

Solenoid valves can be two-way or have multiple ports. They are generally defined by two digits, one determining the number of ports and the other the number of positions. For example, a 3/2 solenoid valve is one with 3 ports and 2 positions.

Most solenoid valves operate on an on or off basis (open or closed), while some are designed to be proportional to the current or supply voltage.

Depending on your application and in order to optimize the supply time of your solenoid valve, you have the choice between normally closed (NC) solenoid valves and normally open (NO) solenoid valves:

Solenoid valves are also defined by a nominal diameter (DN). The connection and pipe diameters are specified by standards according to the country or geographical area they are to be used in and according to the media they will be used for.

Solenoid valves may also be subject to other standards, such as those governing equipment installed in ATEX (Explosive Atmosphere) zones, particularly for the energy industries.

When should you use a solenoid valve by ROTEX, PNEUMATROL or ACL?

A solenoid valve is required if you need to control the flow of a liquid or gas, whether it is in automatic control or on/off. In other words, you can use a solenoid valve for example to open or close a circuit, to dose products, to mix gases or liquids, etc.

The applications are varied, ranging from the control of standard process valves to the control of specific valves such as overpressure protection systems and emergency stop valves, as well as fluid control in applications such as fire system valves. One of the advantages of solenoid valves compared to traditional valves is that they allow for a very fast response time.

As LGM ENGINEERING, we are glad to support you in any case and before your choice, by providing you assistance basing on our experience based on decades within fluid control industry.

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