petak, 10.03.2017.
There are Two Common Butterfly Valves
There are two common butterfly valves
The butterfly plate of the butterfly valve is installed in the diametrical direction of the pipe. In the butterfly valve body cylindrical channel, disc-shaped butterfly plate is rotated around the axis, the rotation angle is 0 ° -90 °, the valve is fully open state.
The sanitary butterfly valve is featured by simple structure, small size, light weight, is composed by only a few parts. And only need to rotate 90 ° can quickly open and close the valve, namely simple operation, while the valve has a good fluid control characteristic. When the 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 caused by the valve is very small, so it has better flow control characteristic. Butterfly valve has two sealed types included a sealed seal and metal seal. Elastic seal valves, seals can be embedded in the valve body or attached to the butterfly plate around.
The metal sealed sanitary valves generally have a longer use life than elastically sealed valves, but it is difficult to achieve complete sealing. Metal seals can be adapted to higher operating temperatures, and elastomeric seals have a temperature-limited defect.
If the butterfly valve is required to be used as a flow control, the main thing is to properly select the size and type of the valve. Butterfly valve structure is particularly suitable for the production of large diameter valves. Butterfly valve not only is widely used in the oil, gas, chemicals, water treatment and other general industry, but also used in thermal power plant cooling water system.
Commonly used butterfly valve has a pair of butterfly valve and flange butterfly valve. The clip-on butterfly valve is a double-headed bolt to connect the valve between the two pipe flanges. The flange type butterfly valve is a flange with a flange connecting the two ends of the valve to the pipe flange with bolts.
Oznake: flange butterfly valve
- 04:33 -
