Knowledge bank

What is a solenoid valve and its uses in industrial processes

A solenoid valve is an electromechanical valve that plays a crucial role in controlling the flow of liquid or gas in industrial processes. These valves, offered by Lyma, are characterised by fast and safe switching, long life and high reliability.

Types of solenoid valves: Pilot operated and direct acting

The most common variants of solenoid valves include pilot operated and direct acting models. Pilot operated valves use system line pressure to control the main opening, while direct acting valves manage the main valve opening directly. Modern industrial solenoid valves, such as those from Lyma, offer low voltages (24 V DC) and low power, providing efficient handling of corrosive media.

Applications of solenoid valves in industrial processes

Solenoid valves are widely used in various industrial applications, including:

  • Waterworks
  • Wastewater treatment
  • Mechanical and civil engineering
  • Cooling, lubrication and dosing
  • Security technology
  • Drainage
  • Cleaning processes

Operating principle of a solenoid valve

A solenoid valve usually consists of a coil, piston and sleeve. When the valve is closed, a plunger return spring holds the plunger against the opening to impede flow. Activation of the solenoid coil creates a magnetic field that lifts the plunger, thus enabling the flow. Supplying voltage to an open valve closes the piston off the orifice and stops the flow.

NAMUR solenoid valves for automated valve technology

NAMUR (User Association of Automation Technology in Process Industries) is a standard for automated valve technology. Lyma offers a wide range of NAMUR valves to suit pneumatic actuators to optimise automation processes.

Lyma solenoid valves - an overview

Lyma solenoid valves excel in handling aggressive media such as toxic, corrosive or polluting liquids. They are ideal for applications involving substances such as ferric chloride, solvents, hydrochloric acid, slurries and process gas. Our valves, such as the ASV solenoid valve, offer different material options and connection methods to meet specific requirements and environments.

Model selection - key points to consider

To choose the right solenoid valve model for your application and maximise performance, consider the following factors:

  • Working pressure: Define minimum and maximum pressure and pressure differences.
  • NC/NO: Decide whether the valve should be closed or open when the power is cut.
  • Entrances and exits: Identify the function and number of inputs and outputs.
  • Excitement: Specify the necessary voltage for the operation of the valve.

To explore our wide range and find the perfect solenoid valve for your needs, contact Lyma. We offer reliable and customisable solutions for industrial processes.