Abstract: The present invention provides a solenoid valve controller with simple arrangement, by which it is possible to easily check connecting conditions and operating conditions of solenoid valves. Between a plurality of solenoid valves 11 intensively installed and a serial unit 2 for performing on-off control of each of the solenoid valves according to a control signal from the controller, a switch unit 3 having a plurality of manual switches 30a to 30n to match each of the solenoid valves 11 is connected, and it is designed that each of the manual switches can be switched over to a first switching position to connect the solenoid valves 11 to output terminals 21a to 21n of the serial unit and to a second switching position to connect the solenoid valves to power terminals 20a and 20b.

Abstract: In order to prevent wearing caused by collision when a movable iron core is drawn to a fixed iron core and also to prevent wearing caused by contact when the movable iron core slides in an iron core hole of an electromagnetic valve, a cap mounted on a forward end of the movable iron core and made of an elastic material is provided with a guide tube unit to be engaged in an iron core hole and with a flange unit located on outer side of the iron core hole. Outer diameter of the guide tube unit is designed slightly larger than outer diameter of the movable iron core, and it is slidably engaged in the iron core hole. Distance between the flange unit and outer wall of the iron core hole is designed slightly shorter than distance between the movable iron core and the fixed iron core so that, when power is turned on, the flange unit is brought into contact with outer wall of the iron core hole before the movable iron core collides against the fixed iron core.

Abstract: A double-solenoid type electromagnetic valve having two solenoids integrally connected is disclosed. The solenoids of the electromagnetic valve have the same structure and the same external shape and have connecting mechanisms with engaging rims and engaging grooves on the sides. By connecting the connecting mechanisms with each other, the solenoids are closely connected and overlapped without any gap between them.

Abstract: A method for fabricating a molded solenoid device which is encased in an insulating synthetic resin shell, in which a resilient sealing cover member of an electrically insulating material is fitted on each one of a couple of solenoid coil terminals which are projected from a solenoid coil bobbin. The sealing cover members on the respective coil terminals are brought into intimate contact with inner edges of coil terminal escape holes in a mold in which a solenoid assembly is to be molded, thereby forming tight seals around the coil terminals in the coil terminal escape holes while a molten synthetic resin material is being introduced into the mold cavity around the solenoid assembly.