FIELD: mechanics.
SUBSTANCE: hydraulic control valve is designed to control hydraulically operated assembly units of mobile machines. The two-stage hydraulic control valve with controlled time of the second stage slide valve switching over consists of the first stage hydraulic control valve with electromagnets and the second stage hydraulic control valve comprising a body with cast channels to connect the working hydraulic lines and control lines, a slide valve with return springs arranged on its ends, end face covers. In compliance with this invention, threaded throttle control elements interacting with spring-loaded check valves are arranged in the said end face covers, one in each cover.
EFFECT: simplification of design, higher reliability.
4 dwg
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