Hydraulic changeover valve - functions between pressure converter, high pressure converter and user unit

摘要

The changeover valve (1) responds only to hydraulic parameters and is located in a valve block between a pressure converter/high pressure converter and a user unit, and its control slide (12) with an overflow groove (20) is arranged in a hole with three grooves. Its upper groove (21) is connected via a branch in the valve block (11) with the user unit (3) and the high pressure outlet of the high pressure converter (2). Its central groove (22) is connected to a pump conduit connected from the outside, and its lower groove (23) is connected to the conduit leading to the low pressure side of the high pressure converter (2). The control slider (12) contains a pressure pin (14) at its upper end which slides tightly in a coaxial hole. USE - As a changeover valve.