Importance

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Abstract

A combination hydraulic pressure regulator and pressure switch includes a housing having an interior chamber connecting an inlet port to an outlet port. A seating device is movably received in the interior chamber and has a seat surrounding an opening. The opening is in communication with the outlet port. A poppet is movable in the interior chamber. An adjustment spring normally urges the poppet into engagement with the seat to close the opening, the poppet being movable in a direction away from the seat in response to hydraulic pressure in the interior chamber sufficient to overcome the force of the adjustment spring. A limit switch is mounted to the body. A switch actuator is associated with the poppet for actuating the limit switch in response to movement of the poppet in a direction away from the seat. The seating device is hydraulically balanced in the chamber so that the seat remains engaged with the poppet until a select pressure is exceeded in the interior chamber, thereafter resulting in hydraulic flow from the inlet port to the outlet port.

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First Claim