FIELD: construction.
SUBSTANCE: valve device for control of powered support sections in underground workings contains distribution unit (10) with longitudinal holes (12, 14) that are connected to high pressure line and discharge line as well as several transverse holes (16, 18, 20), in which there are main control valves (F1-F18). Note that the first longitudinal hole (14) is a through-hole, on the both ends of which there is one pre-connected P1 and P2 element, connected to the high pressure provision system. The second longitudinal hole (12) is a through-hole, on the both ends of which there is one pre-connected R1 and R2 element, connected to the discharge line.
EFFECT: reduction of time for powered support sections control.
9 cl, 4 dwg
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Authors
Dates
2013-03-20—Published
2009-02-18—Filed