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.
The hydraulic solenoid valves are used in pilot circuits for
controlling spools of multiple control valves and tilting angles of
variable displacement pumps. They have a compact design and ease of
service providing reliable control in aerospace, defence and marine
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
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.