Butterfly valve, gate valve, check valve, ball valve, globe valve.

Valves belong to pipeline accessories, used to open and close pipelines and control the flow of fluid medium in pipelines. The functions of valves in pipelines include cutoff, regulation, diversion, prevention of reverse flow, pressure stabilization, diversion, or overflow pressure relief. There are various types of valves, and as control components of fluid control systems, there are many varieties and specifications of valves, from commonly used valves such as butterfly valves and gate valves to various valves used in extremely complex automatic control systems.

Butterfly valve, also known as flap valve, is a simple and easy to use regulating valve. The butterfly plate inside the valve body is the closing part of the valve, which is in a disc shape. The working principle is that the butterfly plate rotates around the valve shaft to achieve the opening and closing of the valve. Usually, under the drive of the valve stem, the butterfly plate rotates 90 ° to complete one opening and closing, achieving the purpose of interception. If the deflection angle of the butterfly plate is changed, it can also be used as flow control. Normally, butterfly valves are commonly used for on-off control of low-pressure pipeline media.