1) Introduction
Butterfly valve is mainly composed of valve body, shaft, disc, sear and drive mechanism (handle, worm gear and worm device, pneumatic or electric actuator), etc, on the driving mechanism and disc drive shaft to achieve the purpose of the opening and closing and control flow.
Which can be widely used in petroleum, chemical, food, medicine, paper making, water and electricity, shipbuilding, water supply and drainage, metallurgy, energy, such as the pipeline system, applicable to a variety of corrosive gas, liquid, half liquid and solid powder medium..

2) Characteristics
Simple and compact structure,small and light, easy transportation, installation and disassembly.
90°opening and closing, switch is quick. Minimized operating torque, energy saving.
Good sealing performance, long service life and can achieve zero leakage.
Choose different parts material, can be applied to a variety of media.
Flow characteristic similar to linear, adjust good performance.