Electromagnetic (Solenoid) Valves

An electromagnetic or solenoid valve is an electrically activated valve, typically used for shutting off the flow of water, steam, oil solutions, or neutral gases. In our range, we offer classic two-way versions, and more complex solutions can be provided as needed.

The main manufacturing materials used are brass and stainless steel, which ensure the product's long lifespan. The inlet and outlet are in commonly used standard threaded designs. The valves can be used in a wide range of operating temperatures, which are always specified for each particular valve.

Where Solenoid Valves Are Used

Electromagnetic valves are truly very versatile. They can be used in households, gardens, industry, and automobiles. They can be used to control the flow of various liquid and gaseous media. Depending on the type of medium, we distinguish several main types of electromagnetic valves. However, most valves can be used for different media.

Water Solenoid Valves

Probably the most common are water solenoid valves. They are used in plumbing installations, heating systems, irrigation, or in dishwashers and washing machines. If you want to use the valve for drinking water, it must have the appropriate certifications.

Steam and Hot Water Solenoid Valves

Compared to standard water valves, steam and hot water valves are suitable for temperatures up to 160 °C. They are mainly used in steam distribution, for example, when transporting steam from power plants to exchangers.

Cooling and Air Conditioning Solenoid Valves

These types of valves are specifically designed for regulating the release of refrigerant. Besides air conditioning, they are used in compressors or cold storage facilities.

Neutral Gas Solenoid Valves

These valves can be used for any neutral gases, including explosive ones. However, they are not suitable for aggressive substances that could damage the seals. They can be used for various gas and gaseous fuel distributions.

Liquid Solenoid Valves

Most commonly used for non-aggressive heating and other oils. In the case of aggressive liquids or gases, it is necessary to choose a special model designed for aggressive environments.

Juice Solenoid Valves  

This type of valve is used in the food, healthcare, and pharmaceutical industries. Besides juice, it can also be used for other liquids that, for hygienic reasons, should not come into contact with the valve body. Instead of the valve body, the medium flows through a tube, and the flow is then controlled by compressing the tube.

These valves can also be used for non-aggressive liquids with small mechanical impurities. Since the liquid does not flow through the valve body, there is no risk of clogging or blockage.

Types of Electromagnetic Valves  

Besides the medium, its temperature, and pressure, you can choose electromagnetic valves based on other parameters. 

Two-Way or More Complex

In practice, two-way electromagnetic valves are most commonly used, which can open or close the flow of gas or liquid. However, three-way valves are also quite common, allowing multiple circuits to be connected and using functions such as mixing and dividing flow or switching between individual circuits. Even more complex requirements can be met with multi-way valves.

Electromagnetic Valves by Function

1. Normally Closed (NC)

Valves are open when powered, closed when not powered.

2. Normally Open (NO)

Valves are open when not powered, closed when powered.

Types of Electromagnetic Valves by Control

When selecting an electromagnetic valve, it is crucial to determine whether the liquid pressure matches the valve's operating pressure. Incorrect determination of operating or differential pressure can lead to malfunction or defects in the valve.

Based on the input differential pressure, it is determined whether the valve will be directly or indirectly controlled.

Directly Controlled Electromagnetic Valves

The coil (solenoid) opens the valve membrane, activating it and lifting the valve body and seat without relying on external pressure.

Indirectly Controlled Electromagnetic Valves

Such a valve requires an input differential pressure of at least 0.5 bar for proper operation, both for NC and NO types.

We Are Happy to Advise You on Your Selection

We most commonly supply electromagnetic valves as a complete set, i.e., valve with coil (solenoid). Coils can be replaced, and we offer them for voltages: 230 V, 110 VAC, 24 VDC, 24 VAC, 12 VDC, and 12 VAC.

From our range, we recommend electromagnetic valves from TORK and Danfoss.

Detailed information on TORK electromagnetic valves and a guide on how to choose the right type can be found here. Detailed information on Danfoss electromagnetic valves can be found here.

In case your valve is malfunctioning or not working correctly, we have created an overview of the most common problems and their possible solutions.