Working principle and purpose of the product:

The D643F/H pneumatic flange butterfly valve has the advantages of simple structure, easy operation, light weight, large diameter, high flow capacity, and self-cleaning function. Pneumatic flange butterfly valves are suitable for regulating suspended particles and concentrated/turbid slurry head fluids. They are widely used in the automation and remote control of production processes in industries such as petroleum, chemical, power station, textile, and papermaking, for controlling processes such as liquid level, flow rate, and pressure.

Product Structure Features:

1. The butterfly valve has a simple, compact structure, light weight, easy installation and disassembly, and convenient maintenance;

2. This butterfly valve adopts a stainless steel "U" - shaped sealing ring, which has a certain degree of elasticity and excellent sealing performance with the butterfly plate under high and low temperature conditions;

3. The three-dimensional eccentricity of this butterfly valve has been rigorously calculated, and the "U" - shaped sealing ring has almost no friction with the butterfly plate, with a long service life and the function of tightening as it is closed;

4. The sealing surface of the butterfly plate is made of welded cobalt based hard alloy, which is wear-resistant and has a long service life.

5. This butterfly valve has a unique structure, and the "switch" can be completed by rotating the valve stem 90 °. Flexible, convenient, effortless operation, not affected by the high or low pressure of the medium, and reliable sealing performance;

6. High temperature resistance, low temperature resistance, and corrosion resistance.