Pilot-controlled pressure-shock auxiliary outlet valve

摘要

Pilot-controlled pressure-shock auxiliary outlet valve with an annular piston valve which is normally closed, characterised by a pressure connection line which connects the feed pressure region via at least one restrictor to the closed piston chamber, the pressure of which acts upon the rear side of the piston in the closing direction, by a control device that is controlled by the medium also flowing through the pipe and, in the event of the desired presettable feed pressure condition, reduces the pressure in the piston chamber, and by a braked closing device, operated by accumulator energy, for the annular piston valve.