Dome Valve®

All the systems supplied by Clyde Bergemann Materaisl Handling for Pneumatic Ash Handling utilise the Dome Valve® at all material / air interface points. On any pneumatic system the air / material interface is the critical location and hence the Dome Valve® has been specifically designed to isolate the material and maintain a pressure tight seal while also eliminating any metal on metal contacting parts. This is done using an inflatable rubber seal, which is pressurised when the valve is in the closed position and is then deflated when the valve is opened. The valve is opened and closed using a pneumatically operated actuator. The instrument air source used to operate the actuator is also used to inflate the seal.

The major advantages of the Dome Valve® are:- Full bore unobstructed material flow through the valve forms a pressure tight seal when closed, cuts through moving or static material columns, wide range of valve sizes from 50-500mm diameter, Operating temperature range from -20oC to +480oC (Above 200oC has water cooling) Low Maintenance requirement, high availability and long operating life Up to 1,000,000 cycles between major overhauls