Advantages And Disadvantages Of Butterfly Valve

Advantages and Disadvantages of Butterfly valve

A butterfly valve is a valve that uses a disc-type opening and closing member to reciprocate about 90° to open, close and adjust the fluid channel.

Advantages:

①Simple structure, small size, light weight, saving consumables, do not use in large-diameter valves;

②Rapid opening and closing, low flow resistance;

③It can be used for media with suspended solid particles, and it can also be used for powder and granular media depending on the strength of the sealing surface. It can be applied to the two-way opening and closing and adjustment of ventilation and dust removal pipelines, and is widely used in gas pipelines and waterways in metallurgy, light industry, electric power, and petrochemical systems.

Disadvantages:

①The flow rate adjustment range is not large, when the opening reaches 30%, the flow rate will enter more than 95%;

②Due to the limitation of the structure and sealing material of the butterfly valve, it is not suitable for use in high temperature and high pressure piping systems. The general working temperature is below 300℃ and below PN40;

③The sealing performance is worse than that of ball valves and globe valves, so it is used in places where the sealing requirements are not very high.