493 Parker Hannifin Corporation Fluid Control Solutions Europe General Catalogue FCSE/0112/UK V2.2 07/2022 BASIC COMPONENTS OF A SOLENOID VALVE Valve body: Main part of the solenoid valve including ports, seat and orifices. Solenoid tube Cylinder, in stainless steel, hermetically sealed and closed at one extremity. assembly: It is the guide channel of the moveable plunger which is moved magnetically. The solenoid coil is fitted on the external side of the enclosing tube. Moveable plunger: Made by ferritic stainless steel, it is attracted by the solenoid magnetic field and slides inside the tube. Plunger spring Used to hold the moveable plunger in position and to return it when (or return spring): de-energized. Seat seal: Part of the moveable plunger, it is used to close a valves main orifice or pilot orifice. Electromagnet Electrical part consisting of a copper windings (solenoid) along, (or solenoid coil): with a magnetic yoke (armature), when electric current flows through, it generates a magnetic field atracting the moveable plunger. Housing: Part that contains and protects the coil. Yoke: Metalic case surrounding the coil and concentring electro-magnetic force on the moveable plunger. Solenoid tube assembly Housing Yoke Solenoid coil Moveable plunger Seat seal Plunger spring Valve body TECHNICAL INFORMATION
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