wafer type butterfly valve

The butterfly valve opening and closing component is a disc-shaped butterfly plate that rotates around its own axis inside the valve body to achieve opening, closing, or regulating of the valve, which is called a butterfly valve. The fully open and fully closed butterfly valve is usually less than 90 degrees, and the butterfly valve and stem themselves do not have strong self-locking force. In order to position the butterfly plate, a worm gear reducer should be installed on the stem. By using a worm gear reducer, not only can the butterfly plate have self-locking ability to stop at any position, but it can also improve the operational performance of the valve.
The characteristics of industrial butterfly valves are high temperature resistance, high pressure range, large nominal diameter, carbon steel valve body, and metal ring instead of rubber ring for valve plate sealing. Large high-temperature butterfly valves are manufactured by welding steel plates and are mainly used for flue gas ducts and gas pipelines for high-temperature media.
Advantages:
1. Easy and quick opening and closing, labor-saving, low fluid resistance, and can be operated frequently.
2. Simple structure, small size, and light weight.
3. It can transport mud and accumulate less liquid at the pipeline outlet.
Under low pressure, good sealing can be achieved.
5. Good regulation performance.
Hygienic gradewafer type butterfly valveshortcoming：
1. The pressure and working temperature range are small.
2. Poor sealing performance.
Butterfly valves can be divided into offset plate, vertical plate, inclined plate, and lever type according to their structural forms. According to the sealing form, it can be divided into two types: relatively sealed type and hard sealed type. Soft sealing type generally uses rubber ring sealing, while hard sealing type usually uses metal ring sealing.
According to the connection type, it can be divided into flange connection and clamp connection; According to the transmission mode, it can be divided into manual, gear transmission, pneumatic, hydraulic, and electric.
Hygienic gradewafer type butterfly valveThe installation and maintenance should pay attention to the following matters：
During installation, the valve disc should be stopped in the closed position.
2. The opening position should be determined according to the rotation angle of the butterfly plate.
3. For butterfly valves with bypass valves, the bypass valve should be opened before opening.
4. The installation should be carried out according to the manufacturer's installation instructions. For heavy butterfly valves, a solid foundation should be set up.