Flue restrictor

Details Flue restrictor Flue restrictor

F - Mech Eng,Light,Heat,Weapons

23

L

126/87

F23L 13/00 (2006.01) F23L 13/06 (2006.01)

Patent

CA 1298749

Abstract A flue restrictor controls air flow in a combustion apparatus having an exhaust system that includes a flue. The restrictor comprises a housing to be attached in the flue and comprising a first sub-housing and a second sub-housing having continuous, imperforate side walls. A first valve member is secured to the first sub-housing and a second valve member is secured to the second sub-housing. The sub-housings are positioned with the valve members located adjacent each other, so that the rotation of the sub-housings relative to each other causes the valve members to rotatably cooperate with each other to act as a valve. The sub-housings are enlarged relative to the flue, so that when the valve is opened, flow through the restrictor is the same as flow through the unrestricted flue.

615986

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