Sanitary grade butterfly valve is a standard electronic polishing, smooth surface to ensure clean, no media accumulation area, no potential pollution. Sanitary butterfly valve is a kind of quick disassembly valve, which makes the valve opening and maintenance quick and easy, and shortens the process shutdown time. The following describes its working principle and installation method.

The working principle of sanitary butterfly valve is as follows:

Sanitary butterfly valve is remotely operated by a pneumatic head and manually operated by a handle. There are three standard types of sanitary butterfly valves, namely normally closed (NC), normally open (no) and air / air (A / a). Sanitary butterfly valves convert the axial movement of one piston to the 90 ° rotational motion of the valve shaft. When the round disc in the sanitary butterfly valve contacts the sealing ring of the butterfly valve, the torque of the actuator will increase. The valve can be mechanically locked in the open, closed, middle or other positions by selecting different handle with manual operation.

Sanitary butterfly valve is widely used in food, pharmaceutical, cosmetics, clean steam, wine, beverage, biochemical industrial process control occasions. Type I butterfly valve is suitable for all kinds of sanitary system.

Sanitary butterfly valves are installed and used as follows:

1. Before installation, the pipeline and valve should be cleaned, and there should be no scratch and dirt on the sealing surface to avoid internal leakage or reduce the service life of the product.

2. During installation, it is necessary to carefully check whether the connection model of the clamp is consistent, and a special sealing ring shall be installed at the joint between the clamp and the valve, so as to ensure the reliable sealing between the valve and the pipeline. Horizontal pipe and vertical stainless steel angle steel pipe can be installed.

3. When the pressure medium is filled after installation, rotate the handle 90 ° to check the internal and external sealing. If there is no leakage, it can be put into normal use.

4. Sanitary butterfly valve is used to connect and disconnect the medium, and can also be used to adjust the flow rate. However, the valve should not be installed in the system that requires strict adjustment of medium flow rate.

5. In the process of use, if the butterfly valve is still leaking when it is closed, the sealing ring must be replaced and put into use after the correct installation.