butterfly valve
device
Quick Summary
A butterfly valve is a type of valve used to control fluid flow. It typically consists of a disk that rotates on an axis within the pipe. This disk can be positioned to allow flow in one direction or to block it entirely. Some butterfly valves have two semicircular clappers hinged to a central rib, which also regulate fluid passage. A butterfly damper is essentially the same device, often used to control airflow. These valves are recognized for their relatively simple design and effectiveness in managing fluid or gas movement.12
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