FIELD: mining.
SUBSTANCE: group of inventions refers to mining, particularly to hydraulic facilities of control over sections of powered roof support consisting of valve block connected to hydro-cylinders of control. The technical object of the invention is met like follows: a filter of backwash is secured on the case of the valve block and includes a filtering cartridge in form of a support pipe with through openings; several filtering chambers separated one from another are assembled on the external side of the support pipe; also openings for outlet of hydraulic medium from the support pipe are arranged tangentially outside the filtering chambers.
EFFECT: upgraded reliability of operation of facility for control over valve block with filter containing filtering cartridge by means of facilitating backwash of filter avoiding disassembly of supplying hoses and pipelines.
11 cl, 2 dwg
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