working principle
Just use pneumatic valve pneumatic actuator with air 90 degrees of operation and a small torque can be closed tightly. The body cavity of full equality for the media to provide a little resistance, through the flow channel. It is generally considered the most suitable valve opening and closing done directly used, but recent development has been designed to give it a throttle valve and flow control purposes. The main features of valve is its own compact, easy operation and maintenance for water, solvents, acids and gas work in general media, but also applies to the poor working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene.
 
Scope
In hydropower, thermal power and nuclear power production system; urban and industrial enterprises to drainage, heating, and gas supply systems; in farmland irrigation and drainage systems; and can be widely used in metallurgical production systems, pneumatic valve closed piping system in various types of species for cut off or connected media stream, the medium in accordance with a predetermined program delivery to each designated point.