EHAO
1 / 3
A dome valve is a fast-closing bulk material handling valve designed to seal against moving or static columns of abrasive materials. It uses a unique inflatable sealing mechanism that expands when the valve is closed, ensuring a pressure-tight seal.
These valves are widely used in pneumatic conveying systems, coal-fired power plants, cement factories, steelworks, and chemical processing plants to handle abrasive powders, fly ash, granules, and slurry.
The inflatable seal minimizes friction during the opening and closing cycles. By only inflating when the valve is fully closed, it dramatically reduces wear and tear, offering a longer operational lifespan compared to conventional valves.
Yes, with specialized body materials, heat-resistant coatings, and high-temperature inflatable seals (such as silicone or Viton), dome valves can efficiently operate in high-temperature environments.
The replacement cycle depends on the abrasiveness of the material and the frequency of operation. Regular maintenance inspections are recommended to ensure pressure integrity, though inflatable seals generally outlast standard compressed seals.
