Hydraulic solenoid valves are widely used in a hydraulic system to control the flow of hydraulic fluid. Hydraulic solenoid valves are electrically operated valves that are used for directional control of liquids. They are made up of two parts : the solenoid and the valve. A solenoid consists of a coil surrounding a moveable iron core which is pulled to the operating position with respect to the coil when the coil is energised. Thus a solenoid is an electromagnetic mechanical transducer which converts an electrical signal into a mechanical output force. Hydraulic solenoid valves are made of materials like brass, stainless steel, and polypropelene.
How does a Hydraulic Solenoid Valve Works?
The solenoid converts electrical energy into mechanical energy. When the solenoid or wire coil receives a current, a magnetic field works upon the plunger, which lead to the opening or closing of the valve. The solenoid valves may have wet and dry solenoids, minimum current consumption with an exceptional force to size ratio and twin coil configuration. They offer maximum reliability in hostile environments. Solenoid controlled direction controlled valves can be either single solenoid or double solenoid operated. Most DC types are available with various power rating from 12 V onwards and with solenoid coil indicator lights. These valves are available in sub-plate mounted type or modular/manifold type.
Applications of Hydraulic solenoid Valves
The hydraulic solenoid valves are used in pilot circuits for controlling spools of multiple control valves and tilting angles of variable displacement pumps. Hydraulic machinery uses solenoids to control the flow of oil to rams or actuators bend metal sheets in aerospace manufacturing. They have a compact design and ease of service providing reliable control in aerospace, defence and marine applications. They are often used in irrigation systems and also in everyday household items like a washing machine to control the flow and amount of water into the drum. Being economical and easy to install, these valves feature integral waterproof coils, several push-on termination options and rugged metal covers and are designed for low-pressure applications such as pilot systems or power shift transmission control. They are found in components used for various automobile, military, aerospace and construction uses.
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