Gas/ Liquid Flow Controlling Butterfly Valve is a quick opening valve that consist of a metal circular disc or vane with its pivot axes at right angles to the direction of flow in the pipe, which when rotated on a shaft, seals against seats in the valve body. The Butterfly Valve is normally used as throttling valves to control flow. The Butterfly Valve controls the flow of gas or liquid by means of a disk, which turns on a diametrical axis inside a pipe or by two semicircular plates hinged on a common spindle, which permits flow in only one direction. Gas/ Liquid Flow Controlling Butterfly Valve is available in a compact design that offers a rotary stem movement of 90 degrees or less.
