Electromagnetic control valve

A plunger-type electromagnetic control valve comprising:

• a plunger for controlling movement of a valve member reciprocatively driven within a fixed upper main body by an electromagnetic coil;
• an alignment unit for guiding the plunger along a center axis of the fixed upper main body, said alignment unit comprising:
• a guide hole which extends coaxially through a center of the plunger, and
• a guide pin having one end immovably secured in a hole formed in a stationary member of the control valve, said guide pin being disposed in the guide hole so that said plunger can reciprocate therealong while being maintained in a spaced, contact free relationship with a member which surrounds the periphery of said plunger, and so that one end of the plunger directly engages a first end of a connecting rod which is reciprocatively disposed in the electromagnetic control valve.

A plunger-type electromagnetic control valve comprising:

• a plunger reciprocatively disposed in the control valve in a predetermined operative disposition within a solenoid coil structure;
• a valve element;
• a first spring arranged with the plunger for applying a first bias thereto;
• a second spring arranged with the valve element for applying a second bias thereto;
• a connecting rod operatively interconnecting the plunger and the valve element;
• and
• a guide arrangement for guiding the plunger in a spaced, contact-free, sliding-friction reducing relationship with respect to the solenoid coil structure;
• wherein the guide arrangement comprises a guide pin which is rigidly set in a stationary structure of the control valve and an axial bore formed in the plunger in which the guide pin is received.

A plunger-type electromagnetic control valve comprising:

• a plunger for controlling movement of a valve member reciprocatively driven within a fixed upper main body by an electromagnetic coil;
• an alignment unit for guiding the plunger along a center axis of the fixed upper main body so that an outer peripheral surface of the plunger is maintained in a contact free relationship with surrounding control valve structure, said alignment unit comprising:
• a guide hole which extends coaxially through a center of the plunger, and
• a guide pin having one end immovably secured in a pin receiving hole formed in a stationary member of the control valve.