VALVE Russian patent published in 2017 - IPC F16K1/12 

FIELD: machine engineering.

SUBSTANCE: valve comprises a housing with a central body on the edges, the inlet cavity with seat and inner grooved low and high speed, and the outlet cavity with a seat formed in the internal bore of the central body of the case. The inlet body cavity set input adapter ring and the shutter, in contact with the seat and a large outer diameter cooperating with a smaller diameter, made in the high-speed groove and an outer diameter less than the large diameter internal bore entry adapter. For hermetic separation of the inlet and outlet valve cavities for a smaller outer diameter end of the ring gate and set collar. At this end of the central valve body interacts with the end of the rod, which is arranged together with the piston and is mounted with the cap in the central body inner bore of the body. The two grooves in which a cuff designed to reduce leakage on the control line and a mechanical seal is made in the piston. The outer diameter of the piston interacts with the inner bore of the central body of the case, the mechanical seal of the piston in contact with the saddle. The diameter of the rod interacts with a small inner diameter of the bore in which for sealing separating the inlet and control valves installed cuff cavities cooperating with the rod and the end of the small bore of the housing.

EFFECT: simplifying the valve construction and expansion of the possibilities of using it.

4 cl, 1 dwg