ADJUSTABLE THROTTLE VALVE Russian patent published in 1999 - IPC

FIELD: various hydraulic systems of low noise level. SUBSTANCE: adjustable throttle valve has body with fixed seat and inlet and outlet passages. Tapper throttling member mounted in body coaxially with seat may perform reciprocating motion. This throttling member is spring-loaded and its vertex is directed towards outlet passage. Adjustable device provided with threaded joint is not mechanically linked with taper throttling member and is made in form of adjustable end stop relative to taper throttling member which is provided with centering supports on opposite sides. Taper throttling member is provided with circular groves. EFFECT: enhanced reliability; ease of maintenance; low noise and low cost. 1 dwg