REGULATING TWO-PLUNGER VALVE Russian patent published in 2021 - IPC F16K1/04 F16K1/38 

FIELD: valve engineering.

SUBSTANCE: invention relates to valve engineering, in particular to control valves used in industrial pipeline valves, and is intended to regulate and shut off working media of liquids and gases. The design feature of the proposed regulating two-plunger valve is that coaxial shells are placed coaxially with the stepped plunger in the inner volume of the body, made in the form of hollow truncated cones, with holes on the lateral surface, attached by large lower bases to the body, while the height of the coaxial shells decreases from inner to outer, and the distances between them increase from outer to inner.

EFFECT: prevention of cavitation and good tightness in the closed position.

1 cl, 5 dwg