pneumatic operating double flap disc dump valve for powder system
FREE-VALVE pneumatic operating double flap disc dump valve s are widely used to transport dry solids between areas with different air pressures.This valve is mainly used in the coal ash pneumatic conveying system of thermal power generation enterprises, as the bin pump feed valve and ash discharge valve. At the same time, it can also be used for cement, mining, paper making, chemical industry and other kinds of dry dust,and other media with wear on the pipeline for opening and closing.
pneumatic operating double flap disc dump valve is designed two distinct chambers .When the top chamber opens to allow collected medium to drop through into the bottom flap valve. The top flap valve then re-closes disc to prevent leakage of fugitive and tramp air through the valve. When the bottom flap valve chamber opens to allow medium to pass completely through the valve to the next working process. The bottom flap valve then re-closes to prevent leakage of fugitive and tramp air. Then, it continuously cycles to maintain a steady flow of medium and maintaining a positive seal on the system.When the medium passes through the valve,one of the flapper is always close.
Features
- The valve body of this feed valve is designed with welded structure, the valve disc, the valve seat and all the seals are made of high temperature and wear-resistant fluorine rubber.
- The valve is equipped with observation hole and manhole ,which are convenient for checking the wear of seals at any time. When replacing the seal, the valve does not have to be completely removed, and can be completed only through the manhole, greatly reducing the maintenance workload.
- This valve has the characteristics of good sealing performance, high temperature resistance, strong wear resistance, flexible opening and closing, no stuck ash and ash accumulation, and long service life.
- Low maintenance and wear,Safe operat
- One of valve is always in the closed position, which allows the double flap airlock valve to maintain a positive seal.
Technical Specification:
Nominal size:DN200～DN300
Nominal pressure:PN10
Pneumatic actuator service pressure:0.4—0.6MPa
Suitable temperature:≤250℃
Application:
FREE-VALVE pneumatic operating double flap disc dump valve s are widely used to transport dry solids between areas with different air pressures.This valve is mainly used in the coal ash pneumatic conveying system of thermal power generation enterprises, as the bin pump feed valve and ash discharge valve. At the same time, it can also be used for cement, mining, paper making, chemical industry and other kinds of dry dust,and other media with wear on the pipeline for opening and closing.
