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wafer type butterfly valve meaning

Posted by Bundor valve
wafer type butterfly valve is a more widely used valve, with different valve materials, different driving forms, wafer type butterfly valve can adapt to a lot of different working conditions and different media.wafer type butterfly valve according to the sealing ring material has soft seal and hard seal.
wafer type butterfly valve
The sealing performance of soft seal type butterfly valve is superior, but it can not be used in high temperature and high pressure pipeline due to the limitation of sealing material.The sealing material of the hard sealing pair butterfly valve is metal, which can have strong high temperature and pressure resistance, but the sealing performance is not particularly good.

The main parts of the wafer type butterfly valve material introduction

Body: gray cast iron, ductile cast iron, cast steel, stainless steel, etc.

Butterfly plate: ductile iron, cast steel, stainless steel, etc.

Stem: usually stainless steel;

Seat: soft seal (ethylene propylene ternary rubber, nitrile rubber, polytetrafluoroethylene, etc.), hard seal (carbide).

The driving forms of the wafer type butterfly valve are: handle drive, turbine drive, pneumatic, electric, etc.

wafer type butterfly valve relative to other connected forms of valves, its structure length is shorter, also smaller, suitable for installation in a narrow space environment.So what should we pay attention to when installing the wafer type butterfly valve?

1. Before installation, clean the sealing surface of the valve and the inside of the pipeline, and do not have dust and impurities.

2. The wafer type butterfly valve needs to use the special flange for the wafer type butterfly valve. When installing, the flange hole position must be aligned with the "ear" hole position of the valve, and the flange piece and the valve sealing ring are pressed closely together.

3. After the valve is fixed in the pipeline, it is necessary to do several valve switch tests to observe whether there is jam phenomenon in the process of butterfly plate switch.

4. When installing electric or pneumatic actuators for butterfly valves, we should pay attention to the position of actuator and butterfly plate, open to open, close to close assembly, and then install on the pipeline after assembly and debugging.