DUAL CROSSOVER RELIEF AND CASE SURGE VALVE FOR HYDRAULIC MOTORS AND PUMPS

摘要

A valve assembly is provided which will automatically respond to relieve overload hydraulic pressures in a hydraulic operating device such as a motor or pump, being mounted directly in the housing of the device and operatively communicating with the hydraulic operating circuit to bypass hydraulic pressure automatically when an overload in the device is sensed by the valve assembly. This may include reversible line pressure and also case pressure.