FIELD: machine building.
SUBSTANCE: in case the fluid medium is supplied with the first pressure increasing chamber (32a) and/or the second pressurizing pressure increasing device (10, 10A, 10B) second chamber (32b), first solenoid valve (22) supplies fluid discharged from first pressure chamber (34a) into second pressure chamber (34b) or second solenoid valve (26) to feed fluid discharged from third pressure application chamber (36a), into fourth pressure application chamber (36b).
EFFECT: broader functional capabilities.
18 cl, 16 dwg
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