FREE- VALVE dome valve is currently recognized as the most advanced feeding valve and discharge valve in the field of pneumatic conveying engineering . It has stable and reliable performance, minimal maintenance and repair, and a long service life.
The opening and closing actions of this dome valve occur in a non-contact state between the valve body and the valve core. After the dome valve is closed, its unique air sealing device inside the dome valve body can automatically firmly seal the valve internal passage and keep the conveying cavity on one side of the dome valve in a reliable pressure conveying state.This ensures that the pneumatic conveying system will not occur failure during operation and is reliable.


Due to the special design of the internal components of the dome valve, it ensures unobstructed flow of materials within the valve body and enables the valve body and the valve core to move relatively without contact during the opening and closing process, thus achieving no wear during the material flow and the opening and closing of the valve.


Main benefits
1.Smooth opening and closing without friction, easy operation, less prone to jamming, and ensuring that the sealing surface experiences no frictional wear during the opening and closing process.
2.Quickly open and close; It is inflated and sealed after closing. The flexible sealing ring tightly adheres to the ball top under high pressure. The joint surface is in the form of a band, and the sealing performance is excellent.
3.When the valve is opened, the entire cross-section is in communication, and the dome sealing surface is protected.
4.The system automatically monitors the sealing air pressure and has an alarm function to ensure a good seal.
    

FREE-VALVE pneumatic Dome valves effectively prevent air backflow during pneumatic material handling processes, As feed valves, discharge valves, exhaust valves, pipeline switching valves, and silo top unloading valves. The dome valves successfully solve a series of problems in pneumatic conveying systems, including valve jamming caused by thermal expansion of materials, wear of sealing rings by materials, unreliable valve sealing, and short service life.The application of the dome valve ensures the stable and reliable running of the entire system, significantly reducing the wear of the valves in the pneumatic conveying system.In the pneumatic conveying system,therefore, dome valves are widely used in working conditions such as pneumatic ash handling in thermal power plants and dust removal systems in steel plants. we sincerely recommend that FREE-VALVE brand pneumatic dome valves be used as the feed valves, discharge valves and exhaust vaves.