The characteristics of the industrial butterfly valve can withstand high temperature, the applicable pressure range is also higher, the nominal diameter of the valve is large, the valve body is made of carbon steel, the sealing ring of the valve plate is made of metal ring instead of rubber ring. Large high temperature butterfly valve made of steel plate welding, mainly used for high temperature medium smoke duct and gas pipeline.
In the cylindrical channel of the butterfly valve body, the disc disc rotates around the axis, and the rotation Angle is between 0° and 90°. When it rotates to 90°, the valve is fully open. Manual butterfly valve simple structure, small size, light weight, only by a few parts. And only need to rotate 90° to make timely opening and closing, simple operation, while the butterfly valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics. There are two types of butterfly valve seal: elastic seal and metal seal. Flexible seal valve, seal ring can be inlaid on the body or attached to the butterfly plate around.
Butterfly valve opening and closing parts is a disc shaped butterfly plate, in the valve body around its own axis rotation, so as to achieve the purpose of opening and closing or adjustment. Butterfly valve fully open to fully closed is usually less than 90°.
The advantages of butterfly valve are as follows:
1, easy to open and close, labor saving, fluid resistance is small, can often operate.
2, simple structure, small volume, light weight.
3, relatively strong temperature resistance (generally able to withstand 650℃)
4, high adjustment performance
The disadvantages of butterfly valve are as follows:
1. It is not easy to make small caliber
2. It is difficult to achieve full seal
