In butterfly valves the locking device is a rotatable disc. Horizontal rotation of the disc opens and closes the pipe.
AWP butterfly valves are shut-off valves which are designed for installation in the refrigerant cycles of industrial refrigeration systems. The locking device is a disc as that opens and closes by horizontal rotation within the medium flow. The 90°-rotation is exerted via the shaft and is either done by a hand-operated lever or by electric or pneumatic actuators.
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