Slurries, bulk powders, granules, lumps or dust-laden gases cause seat erosion and
ineffective closure. The inflatable seal provides continuous wear compensation.
Pressure differential also causes accelerated seat wear in conventional hard seat
valves. The inflatable seal provides continuous wear compensation.
Thermal expansion prevents consistent valve seat action. The inflatable seal
provides compensation throughout the temperature range 0º to 660ºF (350ºC).
Temperatures above this range may be tolerated using special valve configurations.
Close and Seal
The displacement action of the rotating dome within the valve housing allows
rotation of a solid column of material so that a choke filled Dome Valve® will
close and seal through packed material.