You Solar Heating System Answare And Reviews

Question: Where can i buy improved replacement air vents for a supplemental solar heating system?

(Posted by: Kevin Y on 2007-10-28 17:43:22)

The vents it uses currently work for a 6 inch diameter air duct. The vent uses 2 flappers that are controlled by a central, removable handle that turns a screw mechanism to open/ close these flappers (metal semicircles ). Unfortunately these flappers were not designed to seal well. Brackets to hold and move these flappers, have left design holes in the flappers. Also there are other gaps along the straight edge on each flapper. There must be more efficient air handling valves !

Posted by: hillbilly named Possum on 2007-10-28, 18:39:56

The kind of dampers you are looking for do exist, but are very expensive. it sounds like you would benefit from some 6 " round pipe zoning dampers. try this link ewccontrols.com/ rounds.htm these are the zoning dampers that I use when i do a zoned house. you can see in the pic they have a rudder lip on the damper blade. the link explains things better than i really want to, so there u have it. Possum, HVAC guy