Hydraulic control system for fire department manager

摘要

The hydraulic control comprises a hydraulic motor (3) with an inlet control valve (6) actuating a main valve (71). The hydraulic inlet control supply operates via a switching valve (5), which has its outlet (7') connected to the main valve. One inlet of the switching valve is connected to the hydraulic inlet control valve, and the other inlet is connected to the hydraulic outlet supply of an emergency hand control (4). The hand control operates on the main valve with a predetermined, lower control pressure relative to the inlet valve.