hyway61 wrote:In heating and plumbing supply they sell a simple baro damper often installed in a tee and found on oil burners. These consist of a round weight on a screw with a locking nut ; and they cost about $10 or $15 plus the tee. Are these OK for airtight coal stove applications..?
I think your talking about the B - 34 model field control made them the weight does to slide like the Type RC or the RCBT model the one you have is just a screw that spins in and out to counter balance the flap door.
kinda like a Type M but a cheaper model with a smaller counter weight screw with no holes in the door flap plate and the plate is round not flat on the sides like the M also it is made inside a Tee.
Like the RCBT is but the RCBT has a sliding weight with a scale on it like the Type RC .
Like with any baro you need draft gauge or a manometer to set it up correctly & also needs to be level .
The B -34 are ok but they are not the most arrcurate baro out there .
The Type M Type RC & Type RCBT are better and more arrrcurate.
But having any baro is better then not having any at all .