D643 Stainless Steel Electric Motorized Pneumatic Operate Adjusting Regulating Flange Connection Wcb Butterfly Valve Factory

Purpose and functions:

• D643 pneumatic flange hard-sealed butterfly valve has low resistance. The medium and large diameter pneumatic flange butterfly valve has a large effective flow area when fully opened. It can open and close quickly and save labor. The butterfly plate can be opened and closed by rotating 90 degrees. Due to the medium on the butterfly plates on both sides of the rotating shaft The acting forces are nearly equal, but the torque produced is in the opposite direction, so the opening and closing torque is small, and good sealing can be achieved under low pressure.

• Pneumatic flange butterfly valves are widely used in pipelines with corrosive media such as metallurgy, electric power, petroleum, chemical industry, air, gas, combustible gas, water supply and drainage

Features:

• There is no friction between the sealing pairs: The sealing pair of the valve is designed using unique geometric principles. There is no friction between the butterfly plate sealing ring and the valve seat during the entire switching process.

• - Anti-fly-out valve stem: When the connection between the valve stem and the butterfly plate fails during use, the valve stem will not rush out of the valve body and harm the operator.

• - High temperature resistance: There are no rubber or plastic parts in the entire valve internal structure, and the valve has high temperature resistance.

• - Bearing protection: The bearings in high-temperature valves are protected by pre-compressed flexible graphite rings. The medium in the pipeline cannot enter the bearings, which improves the valve's anti-jamming ability.

• - Torque shut-off characteristics: The triple-eccentric butterfly valve relies on torque to shut off, and there will be no over-closing (no limit adjustment required).

• - Zero leakage: When the valve is closed, the multi-layered metal sealing ring is embedded in the valve seat hole, producing a strong fitting force; when the valve is subjected to a forward pressure test, zero leakage can be achieved.

Standard Design

• Design standard: GB/T12238

• Structure length: GB/T12221

• Flange connection size: HG/T 20592

• Inspection and testing: GB/T26480

Specification 

Body Type

Exploded view of butterfly Valve

Materials of Main parts

 

About Delivery

About Application