Valve seal for a diverter assembly

A control valve for use in a gas flow installation for controlling a gas stream flowing therethrough, said control valve comprising:

• a. a stationary housing for communicating with the gas flow installation, said housing including a central axis and a plurality of open frames extending in generally radial directions from said axis including a first frame and a second frame, a delivery duct and an exit duct to enable the entry and exit of gas through said installation and a plurality of openings disposed about the housing periphery for controlling gas stream flow;
• b. a gas flow distribution blade for alternating the flow of the gas stream through the fluid flow installation, said blade extending radially in at least one direction from said central axis and arranged for rotation on said axis between a first position wherein said blade is in abutting relation with said first open frame to a second position wherein said blade is in abutting relation with said second open frame;
• c. a seal ring mounted to each of said first and second open frames, said seal ring adapted to form a seal between said blade and said first or second open frame when said blade is in said first or second position;
• and,
• d. wherein when said blade is in said first position, said delivery duct is in fluid communication with a first opening to define a first gas stream inlet path, and when said blade is rotated to said second position, said delivery duct is in fluid communication with a second opening to define a second gas stream inlet path.