Valve arrangement, has valve element adjusted by electrohydraulic slide drive over control surfaces, where drive has adjusting pump arrangement, by which control surfaces of valve element are loaded to adjustment with pressure difference

摘要

The arrangement has a control valve, whose valve element (64) is adjusted by an electrohydraulic slide drive over control surfaces (70, 72). The slider drive has an adjusting pump arrangement, by which the control surfaces of the valve element are loaded to the adjustment with a pressure difference. The arrangement has centrifugal pumps, which are driven by a motor and comprise pressure connectors. The control surfaces are assigned to the pressure connectors.