product description:
The butterfly plate of the pneumatic wafer butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis. The initial position of the valve is determined according to actual requirements. When the valve rotates 90° from the initial position, an action ends (from opening to closing, or by Close to open), otherwise, another action (from close to open, or from open to closed) ends.
Features:
1. The pneumatic wafer butterfly valve is simple in structure, small in size and light in weight. It consists of only a few parts and is easy to install.
2. When the pneumatic wafer 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, so the pressure drop generated by the valve is small, so it has better flow control characteristics.
3. The pneumatic wafer butterfly valve has two sealing types: elastic seal and metal seal. Elastic sealing valve, the sealing ring can be embedded in the valve body or attached to the periphery of the butterfly plate.
4. The pneumatic wafer butterfly valve has a long life, but it is difficult to achieve a complete seal. Metal seals can adapt to higher operating temperatures, while elastic seals have the defect of being limited by temperature.
5. The clever wedge-shaped design makes the pneumatic wafer ball valve have an automatic sealing function that is tighter and tighter.
| Country to which standard belongs |
China |
Japan |
America |
| Manufacturing standard |
JB/T8527-97 |
JIS B2064 |
ANSI16.34 |
| Flange standard |
GB9113-2000 |
JIS B2212~2216 |
ANSI 16.5a
MSS-SP-44 |
| Structural length standard |
GB12221-89 |
JIS B2002 |
API609
MSS-SP-67 |
| Inspection standard |
GB/T13927-92 |
JIS B2003 |
API598-92 |
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