Overview of Pneumatic Manual Dual purpose Butterfly Valve Products

This D643H pneumatic hard seal disc valve picture includes solenoid valve, air source processing triple component, limit switch, locator and other pneumatic components. The D643H pneumatic butterfly valve developed by our company has a compact structure, easy 90 ° rotary switch, reliable sealing, and long service life. It is widely used in water treatment plants, power plants, steel mills, papermaking, chemical, catering and other systems for water supply and discharge, as well as for regulating and shut-off purposes.

　　Pneumatic and manual dual-purpose butterfly valve product classification

1. Classified by structural form

(1) Center sealed butterfly valve

(2) Single eccentric sealed coal valve

(3) Double eccentric sealing butterfly valve

(4) Triple eccentric sealing valve

2. Classified by sealing surface material

(1) Soft sealed butterfly valve.

The sealing pair is composed of non-metallic soft materials.

The sealing pair is composed of metal hard materials and non-metal soft materials.

(2) Metal hard sealed butterfly valve. The sealing pair is composed of metal hard materials.

3. Classified by sealing form

(1) Forced sealing butterfly valve

Elastic sealed butterfly valve. The sealing pressure is generated by the compression of the valve seat by the valve plate when the valve is closed, and the elasticity of the valve seat or plate generates an external torque to seal the butterfly valve. The sealing pressure is generated by the torque applied to the valve shaft externally

(2) Pressure sealed butterfly valve. The sealing pressure is generated by the pressurization of the elastic sealing element on the valve seat or valve plate

(3) Automatic sealing butterfly valve. The sealing pressure is automatically generated by the medium pressure.

　　Pneumatic manual dual-purpose butterfly valve basic options

Model: D643H

Caliber: 50～1200mm

Pressure: 0.6MPa～1.6MPa

Material: cast steel, cast iron, stainless steel

　　Pneumatic and manual dual-purpose butterfly valve product features

1. This valve adopts a three eccentric structure, which has a sealing function that becomes tighter as it is closed, and the sealing performance is reliable.

2. The sealing auxiliary material is made of stainless steel and asbestos board, which has a long service life.

3. The stainless steel+asbestos plate sealing ring can be located on the valve body or on the butterfly plate, and can be suitable for different characteristics of media for users to choose from.

4. The butterfly plate adopts a frame structure, with high strength, large overcurrent area, and low flow resistance.

5. The overall baking paint can effectively prevent rust and can be used in different media as long as the sealing material of the valve seat is replaced.

6. This valve has a bidirectional sealing function and is not controlled by the flow direction of the medium or the spatial position during installation. It can be installed in any direction.

7. This valve has a unique structure, flexible operation, labor-saving, and convenience.

　　Main structural parameters of pneumatic manual dual-purpose butterfly valve

　　Main component materials of pneumatic manual dual-purpose butterfly valve