DELCO Pneumatic Inflatable Spherical Dome Valve – Semi-Ball Ash Valve

✅Spherical Dome Geometry: The Semi-Ball (Dome) design creates a large cavity that allows material to pass freely when open, while presenting a hardened spherical surface to the seal when closed to resist abrasion.

✅Active Inflatable Sealing: The seal automatically inflates with compressed air only after the dome has fully closed, preventing seal wear during rotation—a major advantage over friction-based Pneumatic Ball Valves.

✅Pressure-Tight Isolation: Designed to hold differential pressures in pneumatic conveying lines, acting as a reliable airlock for vessel inlets and outlets to prevent pressure loss.

✅Material Jamming Prevention: The clearance between the dome and the housing allows particles to clear during rotation, while the inflatable seal compensates for any gaps to ensure zero leakage.

✅Hardened Protection: The spherical dome is typically treated with Tungsten Carbide or Chrome plating, ensuring it remains smooth and undamaged even after cutting through thousands of cycles of abrasive ash.