Patent ID: 6186045
Filing Date: 2001-02-13
Classification: F15B,G05B,Y10T

Abstract:
A latching valve for controlling an actuator in a channel of a fluid control system, comprising:a valve body defining a control chamber, an inlet, an outlet, and a working output, the working output being connectable to an actuator, the control chamber adapted to receive control flow from a fluid control system;a movable valve operator translatable between a first and a second position inside the valve body, the first position allowing fluid communication between the outlet and the working output, and the second position allowing fluid communication between the inlet and the working output, the position of the valve operator being controlled by fluid pressure in the control chamber; anda bleed conduit in the latching valve fluidically connecting the control chamber and the working output, the bleed conduit allowing fluid to bleed therethrough to maintain a fluid pressure in the control chamber to thereby latch the movable valve operator in the first and the second position.