The butterfly valve has a simple structure, small volume and light weight, and is composed of only a few parts. And only need to rotate 90 ° to quickly open and close, simple operation, and the valve has good fluid control characteristics. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the valve body of the butterfly valve, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0 ° and 90 °. When it is rotated to 90 °, the valve is fully opened. When the flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body. Therefore, the pressure drop generated by the valve is very small, so it has good flow control characteristics. There are two types of butterfly valve: elastic seal and metal seal. Elastic sealing valve, the sealing ring can be embedded on the valve body or attached to the periphery of the butterfly plate.
1. Small and light, easy to disassemble and maintain, and can be installed at any position.
2. The structure is simple and compact, the operation torque is small, and the 90 ° rotation is quickly opened.
3. The flow characteristics tend to be straight, and the adjustment performance is good.
4. The connection between the butterfly plate and the valve stem adopts a pinless structure, which overcomes the possible internal leakage points.
5. The outer surface of the butterfly plate adopts spherical shape, which improves the sealing performance and prolongs the service life of the valve. It still maintains zero leakage for more than 50,000 openings and closings under pressure.
6. The seal can be replaced, and the seal is reliable to achieve two-way sealing.
7. The butterfly plate can be spray coated according to user requirements, such as nylon or PTFE.
8. The valve can be designed as flange connection and wafer connection.
9. The drive mode can choose manual, electric or pneumatic.
