Device for controlling the opening and closure of a tap with high pressure and flow rate

摘要

According to the invention the device comprises a piston 1 forming a main shutoff sliding freely with a certain clearance in a cylinder 2 forming part of a chamber 3 in which one entry of pressurised fluid opens, a bore 10 traversing the piston and being capable of being shut off by a pilot valve 13 which can be actuated mechanically parallel to the axis 9 of the piston. The invention applies to controlling the circulation of fluids under high pressure and at a high flow rate. <IMAGE>