DIRECT-FLOW CUT-OFF VALVE Russian patent published in 2002 - IPC

FIELD: protection of pipeline transport systems against pouring of moving liquid. SUBSTANCE: direct-flow cut-off valve includes body with inlet and outlet ports arranged coaxially; piston; locking member; spring and stationary nozzle opening. Inside body of valve there is fixed cigar-shaped capsule in which piston group is placed. Locking member is made monolithically with piston rod. Spring is mounted with possibility of adjusting its compression state by means of nut with the aid of movable partition. EFFECT: lowered loss of liquid energy due to changing mutual arrangement of valve members. 1 dwg