Solenoid Valves

What are solenoid valves?

Solenoid valves are electrically controlled valves used to open, close or direct the flow of liquids and gases in a system. They are an essential part of modern fluid flow control, especially in applications where speed, precision and reliability are important. Because they combine electrical actuation with mechanical valve movement, they are also known as solenoid operated valves or electromechanical valves.

At HBS Valves, solenoid valves are part of a broader range of solutions for hydraulic and industrial applications. In practice, a solenoid valve makes it possible to control the movement of a medium without manual operation. When an electrical signal is sent to the valve, the internal mechanism changes position. This can allow flow, stop flow or control the direction of flow through the circuit.

This makes solenoid valves suitable for automated systems, hydraulic circuits, pneumatic installations, mobile machinery and industrial equipment. For companies looking for dependable industrial fluid control, the HBS Valves range of solenoid valves offers efficient solutions that help improve process control, machine safety and operational reliability.

How do solenoid operated valves work?

A solenoid valve works with an electrical coil, commonly referred to as a solenoid valve coil. When the coil is energized, it creates a magnetic field. This magnetic field moves an internal component, such as a plunger or poppet, which changes the position of the valve. Depending on the valve type, the flow path is opened, closed or redirected.

One commonly used design is the two-way solenoid valve. This type of valve has two ports and controls flow between those two points. A two-way solenoid valve can be normally closed, meaning it blocks flow when it is not energized, or normally open, meaning it allows flow when it is not energized. When the coil receives power, the valve changes state and performs the required control function.

This simple but effective operating principle makes solenoid valves highly suitable for automated machinery. Instead of manually opening or closing a valve, the system controls the valve electronically. This allows for fast switching, repeatable operation and precise control in demanding environments such as hydraulic power units, mobile machines and industrial systems.

The HBS catalogue includes solenoid operated valves for demanding applications, including versions for working pressures up to 350 bar. Continuous duty coils can be selected separately based on voltage, current type and connector requirements.

Applications of hydraulic solenoid valves

Hydraulic solenoid valves are widely used in systems where oil or another hydraulic fluid must be controlled under pressure. These valves are commonly applied in construction machinery, agricultural equipment, cranes, lifting platforms, excavators, drilling rigs, telehandlers and industrial hydraulic systems.

In hydraulic systems, solenoid valves can open or close a flow path, block flow in one or both directions, support load holding, manage actuator movement or help control when pressure is applied to a specific part of the system. This makes them valuable in machines where controlled movement, safety and reliability are critical.

Although a solenoid valve is not always the same as a dedicated pressure control valve, it can play an important role within a pressure control system. It can isolate sections of a hydraulic circuit, release or block pressure and control the timing of hydraulic functions. This makes hydraulic solenoid valves from HBS Valves a key component in many industrial and mobile fluid power applications.

Pneumatic solenoid valves and air control systems

In addition to hydraulic systems, solenoid valves are also widely used in pneumatic applications. Pneumatic solenoid valves control the flow of compressed air and are often found in automation systems, production lines, packaging machinery and assembly equipment.

In pneumatic systems, solenoid valves can control air cylinders, switch compressed air on or off, or direct air to different parts of a machine. Because compressed air systems are often used for fast and repetitive movements, solenoid valves are a practical choice for applications that require quick response times and consistent operation.

The same basic principle applies to both hydraulic and pneumatic solenoid valves: an electrical signal activates the valve, allowing the system to control the flow of a medium. The main difference is the type of medium being controlled. Hydraulic solenoid valves are designed for liquids such as oil, often under high pressure, while pneumatic solenoid valves are designed for compressed air.

Benefits of solenoid valves in industrial fluid control

Solenoid valves offer several advantages for industrial, hydraulic and pneumatic systems. One of the main benefits is fast electrical operation. A solenoid valve can switch quickly when it receives an electrical signal, which is ideal for automated systems that require precise timing.

Another benefit is reliability. When selected correctly, solenoid valves provide consistent performance in demanding environments. They are designed for repeated switching operations and can be integrated into compact systems, manifolds or cartridge valve assemblies.

Solenoid valves also improve system safety. In hydraulic applications, they can help hold loads in position, prevent unwanted flow and support controlled movement. In pneumatic systems, they ensure that compressed air is only supplied when needed. This helps protect machines, operators and production processes.

For HBS Valves customers, this makes solenoid valves a valuable solution for improving machine performance, reducing manual operation and supporting long-term system efficiency.

Choosing the right solenoid valve

Selecting the right solenoid valve depends on several factors, including the medium, working pressure, required flow rate, valve function, voltage, connector type, installation space and environmental conditions.

For hydraulic applications, it is important to choose a valve that can handle the required pressure and flow. For pneumatic systems, the valve must be suitable for compressed air and the required switching frequency. The valve configuration is also important. Some systems require a normally closed valve, while others need a normally open valve or a specific two-way flow control function.

The solenoid valve coil should also be selected carefully. The coil must match the electrical supply of the machine or system. Voltage, current type and connector style can all affect compatibility and long-term performance. The HBS catalogue shows different coil and connector options, allowing solenoid valves to be adapted to a wide range of technical requirements.

Find the right solenoid valve at HBS Valves

Solenoid valves are versatile components for controlling liquids and gases in hydraulic, pneumatic and industrial systems. They provide fast electrical actuation, reliable flow control and flexible integration into automated machines and fluid power circuits.

Whether you need hydraulic solenoid valves for high-pressure applications, pneumatic solenoid valves for compressed air systems or a two-way solenoid valve for controlled switching, the right valve can improve safety, efficiency and system performance.

Explore the HBS Valves range of solenoid valves to find a suitable solution for your application, or contact the HBS Valves team for support in selecting the right valve, coil and configuration for your system.