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Key Features of Dome Valve:
Full aperture channel for material unobstructed flow after the valve open;
To fully turn on/off the valve by rotating 90 degrees;
There is no touch between the dome and the valve seat when the valve turn on/off, it greatly reduced the wearing;
Low-maintenance. Replacement time is quick.
Inflatable seal ring has goog tightness,the valve can open and close through a static or moving column of material.
Temperature capabilities from -20℃ to 480℃
Sealing pressure is up to 30barg
Reliable performance and continuous actions by 1 million times;
Principle of Operation:
The dome component closes beneath the seal when the seal is relaxed (not inflated), allowing a controlled gap between the seal and dome. Material is allowed to pass through or enter the controlled gap if, due to its characteristics, it is pulled into the gap by the action of the dome component moving to its closed position. In the closed position, high pressure air or other gas enters the space between the back of the seal face and the insert ring to cause the seal face to expand onto and around the periphery of the dome component. Material particles are entrapped by the seal against the dome surface, irrespective of particle size or shape. Before opening the valve, the seat is relaxed, and the controlled gap is reestablished before the dome component moves to its open position. The seal is a loose component clamped into place by a spigot piece and external fasteners holding the top plate assembly to the body. The seal is easily removed for inspection.
Watch a Video:
PH1:200-280℃, top-plate water-cooling
PH2: 280-350℃, top-plate and dome water-cooling
PH3: 350-450℃, top-plate, dome and valve body water-cooling
Top &bottom adapter
Pneumatic Cylinder Choice:
Straight Rod Pneumatic Cylinder
Oscillating Pneumatic Cylinder
Vane Type Pneumatic Cylinder
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