DuraVent DVL Features
- 45 and 90 Degree, Both Adjustable: Both angles adjust rather than lock at a fixed degree, so you can dial in an offset around a joist or beam instead of hoping the framing cooperates.
- 6" Clearance Instead of 18": The double-wall air-insulated design cuts required clearance to combustibles from 18" down to 6", the closest wall clearance of any connector pipe. That is what makes a stove fit in a corner or a tight alcove.
- Stainless Steel Inner Wall: A .016" stainless inner wall heats fast and holds heat longer, keeping the draft strong and steady from the first match. A hotter connector means less condensing flue gas and noticeably less creosote through the season.
- Black Painted Galvanized Outer: The .018" galvanized outer wall carries a black painted finish with clean welded seams, so the exposed run from stove to ceiling looks finished rather than utilitarian.
- No Cutting or Crimping: Adjustable and telescoping lengths absorb the odd measurement, so the run is sized on site without a tin snip. Faster installs and no raw cut edge to rust.
DVL Double Wall Stove Pipe Specifications
| Available Angles | 45 degree, 90 degree |
| Part Numbers | 6DVL-E45, 6DVL-E90 |
| Inner Diameter | 6" |
| Adjustability | Adjustable |
| Construction | Double-wall, air-insulated |
| Inner Wall | .016" stainless steel |
| Outer Wall | .018" galvanized steel, black painted |
| Clearance to Combustibles | 6" |
| Listing | c-UL-us to ULC S641 (MH14089) |
| Finish | Black painted, welded seams |
| Application | Interior connector pipe, stove to chimney |
| Connects To | Class A chimney via 6DVL-ADT adaptor |
DuraVent DVL Installation Manual
Download the full manufacturer installation instructions before you begin. Installation must follow these instructions and your appliance manual to stay code compliant and keep the warranty valid.
DVL Stove Pipe FAQ
How many elbows can I use?
Two 90 degree elbows is the normal maximum in a connector run. Every bend costs draft, so keep the path as straight as the room allows.
Do the elbows lock at a fixed angle?
No, both adjust. You set the angle during assembly and secure it, which is what lets you clear a joist without reframing.
Does an elbow reduce my maximum run length?
Effectively yes. Elbows add resistance, so if your run is already near the 8 to 10 foot limit, adding bends can weaken the draft.
What is the difference between DVL and single wall DuraBlack?
Clearance and price. DVL needs only 6" to a combustible wall where single wall needs 18", and its stainless inner wall drafts better and builds less creosote. DuraBlack costs less and is the economical choice when you have the room.
Can this pass through a wall or ceiling?
No. Connector pipe of any kind stops at the ceiling or wall. To pass through the building you need Class A chimney, and the two join with a chimney adaptor at the ceiling support box or wall thimble.
How do I connect this to my stove?
Use the DVL stove adaptor (6DVL-AD), which fits the stove's flue collar and gives the pipe a proper mechanical connection. For a rear-exit stove use the tee with cover (6DVL-T) instead.
How much connector pipe can I run?
Most stove manuals cap the total connector run at 8 to 10 feet with no more than two 90 degree elbows, and any horizontal section must rise at least 1/4" per foot toward the chimney.