elbow help

[coreboy83]

what is the difference between corrugated and adjustable elbows ?

 

[begreen]

The angle is fixed with the first and adjustable with the second. There are also welded seam non-adjustable elbows that are fixed but smoother inside.

 

[coreboy83]

Do the corrugated elbows have airflow issues?

 

[begreen]

Issues? Probably less smooth airflow but not as much as a 90 elbow vs the softer angle created by a pair of 45s.

 

[coreboy83]

makes sense. I'm new to this, and trying to figure it out as I go

 

[Squisher]

The angle is the greater issue than the inside being smooth or corrugated as Begreen pointed out. 90's which lead to horizontal sections are nasty soot collectors.

 

[coreboy83]

Ok, I'll keep my eye on it. I have 14" up off the stove, 90 elbow, and a 12" straight with damper going into clay flue chimney

 

[Squisher]

Similarish to my basement install of my summit. And that horizontal piece of pipe will collect soot. I mean all the pipe will, but that horizontal section will collect a little more. The bigger concern is it effect on draft. Depending on your overall setup it could work fine though, mine does. I heat full time with mine and clean it once a season. My pipe vents into about 22' of lined but not insulated interior masonry chimney. And my draft is decent. It's when you're fighting draft because of a short stack that those 90's will really hurt.

If you're really curious about your setup. Get some pics up of it, maybe in a new appropriately titled thread and if nothing else you'll get all sorts of opinions. But be prepared to answer questions and measure some stuff too if you do.

 

[begreen]

Ok, I'll keep my eye on it. I have 14" up off the stove, 90 elbow, and a 12" straight with damper going into clay flue chimney

If this is a 6" flue going into a short clay lined chimney can be a real draft spoiler. What size is the liner and what stove?

 

[Woody Stover]

I would want the peace of mind that a one-piece, welded stainless elbow provides. Those cheap adjustables can rust out and come apart, and they have too many seams that rely on a tight fit, which can be compromised if the pipe gets hot.

 

[coreboy83]

If this is a 6" flue going into a short clay lined chimney can be a real draft spoiler. What size is the liner and what stove?

its a lined, but not insulated 19' chimney. stove is an old p.o.s. Comfort Stove, potbelly

 

[bholler]

I would want the peace of mind that a one-piece, welded stainless elbow provides. Those cheap adjustables can rust out and come apart, and they have too many seams that rely on a tight fit, which can be compromised if the pipe gets hot.

I agree welded ones are better but the black adjustable ones as long as they are good quality work just fine. We honestly have never had one fail in use for a wood stove. Yes they can come apart when you take the pipe down and they will rust out with coal or in very damp basements. But they are fine for most people.

 

[coreboy83]

I think I'll be fine with the adjustable. I'll be using the stove just on the weekends. Our plan is to upgrade to a Lopi and use that for primary heat,, once our money tree blooms....