South Bend Controls, Inc.

Paul Dzialakiewicz

Peter G Hutchings

Donald Sack

William H Nash

A valve actuating apparatus for control of fluid flow that has a housing having a valve body with a first port and a second port that extend through the housing. In one embodiment the valve actuating apparatus also has a toggle valve assembly that includes an armature, at least one sealing surface connected to the armature, and a spring biasing the armature to a first position where the sealing surface closes the first port. The valve actuating apparatus further includes a solenoid assembly with an electromagnetic coil and a pole piece having a first leg and a second leg. The first leg is shorter than the second, and the first leg and the armature define an air gap when the armature is in the first position. The electromagnetic coil creates a magnetic field in the pole piece when it is electrically energized to attract the armature toward the first leg to a second position where the air gap is reduced.

Valve actuating apparatus

A valve actuating apparatus for providing proportional control of a fluid flow that includes a housing having a valve body with an inlet port and an outlet port. In one embodiment, the valve actuating apparatus also has a valve assembly including an armature, a movable fluid control member, and at least one spring biasing the armature into contact with the fluid control member. The valve actuating apparatus further includes a solenoid assembly having an electromagnetic coil and a pole piece. The pole piece and the armature define a gap that changes proportionally with the amount of current flowing through the electromagnetic coil. Fluid flow from the inlet port to the outlet port may proportionally increase or decreases as the gap increases or decreases. The valve actuating apparatus may further include a valve seat. The fluid control member may be in contact with the valve seat to inhibit fluid flow through the apparatus when the electromagnetic coil is not energized.

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South Bend, IN, United States of America

Paul Dzialakiewicz