Product Structure Features

The structure principle of expansion butterfly valve is especially applicable to the manufacturing of large-caliber valve. Expansion butterfly valve is not only widely used in petroleum, gas, chemical engineering, water treatment and other general industries, but also used in the cooling water system of thermal power plants.

The Main Structure Features Include

1.Small in size and light in weight, easy disassembly, installation and maintenance, it can be installed wherever needed.

2.Simple and compact structure, low operating torque, 90 degree rotation, and quick opening. 

3.Flow characteristics tend to be linear, with good regulation performance. 

4.The connection between the butterfly plate and the valve rod is pin free, which overcomes possible internal leakage points. 

5.The sealing parts can be replaced, and is reliable, achieving bi-directional sealing. 

6.The valve can be designed of flange connection and clamp connection. 

7.The drive mode can be manual, electric or pneumatic. 

Main external dimensions