F - Mech Eng,Light,Heat,Weapons – 23 – L
Patent
F - Mech Eng,Light,Heat,Weapons
23
L
126/90, 126/91
F23L 13/00 (2006.01) F23L 3/00 (2006.01) F23L 11/02 (2006.01) F23L 13/02 (2006.01) F23L 13/06 (2006.01)
Patent
CA 1175721
Abstract of the Disclosure A valve is provided for installation in the auxillary duct of a furnace stack pipe. The valve prevents flow of air through the damper plate in the auxillary duct when the furnace is switched off. The valve is controlled by a temperature responsive bimetallic strip which is impinged upon by flue gases to move the valve to an open position upon the furnace being ignited and producing combustion gases.
402529
Newell John H.
Stewart & Kolash Ltd
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