Solenoid valves, often called solenoids, are electromechanically operated valves and the most common fluid-controlling element in fluidics designed to distribute, close, release, and mix fluids. Solenoids allow highly reliable, efficient, and safe switching with robust material compatibility for extended life. A solenoid valve works precisely as it is electromechanically operated. A solenoid is a coil of wire, often cylindrical, and is employed as a switch or control for a mechanical device that, while carrying a current, functions like a magnet, drawing a moving core into the coil (such as a valve). Additionally, they are made from high-quality stainless steel, brass, aluminium, PVC, polyamide, resin, and plastic materials with different default valve positions.
Functions of Solenoid Valves
Solenoid valves are best for environments where the fluid flow needs to be automatically controlled. There are several variants in valve design with different ports and fluid pathways possible in typical valves. A 2-way valve has two ports linked when open, allowing fluid to pass through them. The valve is called open when the solenoid is not activated, while closed when the valve is closed even when the solenoid is off.
Types of Solenoid Valves
Solenoid valves are categorised into direct-acting and pilot-operated valves and include:
Typical Applications
In fluid power pneumatic and hydraulic systems, valves are used to:
- Operate Cylinders
- Fluid Power Motors, or
- Bigger Industrial Valves.
Solenoids are also used in the following:
- Sprinkler irrigation systems
- Domestic dishwashers and
- Washing machines to regulate water input.
- To activate the CO2 hammer valve in paintball gun triggers.
