Double hydro-pump, particularly double gearwheel pump, has pump housing in which two rotors revolve on common drive shaft, delivering hydraulic medium in separated pressure channels

摘要

A valve housing (15) accommodates a flow regulating valve (25) arranged in a pressure channel(8,24) of the first pump and with a pressure rise to a predetermined value a connection with the pressure channel of the second pump is freed. The valve housing is a separate component part, connectable with the pump housing. A switch valve (30) is provided, and is activated by the pressure in front of at least one throttle aperture (40) in the pressure channel of the first pump. With a pressure rise in the pressure channel to a second predetermined value over a connecting channel, a connection to a regulating device or similar is freed.