Duravent
Duravent B-Vent 45 Degree Elbow
Duravent B-Vent 45 Degree Elbow
The Duravent Model BV 45 degree elbow offsets a round Type B gas vent run around obstructions such as rafters and joists. The 6" and 8" elbows are three-piece adjustable elbows that rotate 360 degrees for alignment, the 10" and 12" elbows adjust from 0 to 45 degrees, and the 16" elbow is a fixed 45. For listed Category I gas appliances.
Details
| Part numbers | 6BVL45, 8BVL45, 10BVL45-1, 12BVL45-1, 16BVL45 |
|---|---|
| 6" and 8" | Three-piece adjustable elbow, rotates 360 degrees |
| 10" and 12" | Adjusts 0 to 45 degrees, DuraTab joint |
| 16" | Fixed 45 degrees, not adjustable |
| Offset (10", 12") | Two 45 degree elbows give a 7-1/4" offset before added lengths |
| Use | Offsets around rafters, joists and other obstructions |
| Listed for | Listed natural gas or LP Category I gas appliances with draft hoods, and appliances listed for Type B gas vent, with flue gases no hotter than 470°F |
| Not for | Category II, III or IV gas appliances, pressure-tight or liquid-tight vent systems, wood, pellet, coal or oil burning appliances, high-temperature exhaust |
| Clearance | 1" to combustibles (USA, 3" to 30" round) |
| Certification | UL 441 and CAN/ULC-S605 |
| Brand | Duravent |
Questions people ask us
How much offset do two elbows give?
On 10" and 12" vent, two 45 degree elbows joined directly give a 7-1/4" offset, per Duravent's offset table. Add straight pipe between them for more.
Is the 16" elbow adjustable?
No. Duravent makes 16" and larger 45 degree elbows as fixed elbows. The 10" to 14" elbows adjust from 0 to 45 degrees.
Can I use this on a wood stove, pellet stove or oil furnace?
No. Duravent lists Model BV Type B gas vent for listed natural gas or LP Category I gas appliances with draft hoods and appliances listed for Type B vent, with flue gases up to 470°F. Its catalog warns that oil or wood burning appliances can damage the vent, and it is not for Category II, III or IV gas appliances. Wood and pellet appliances need a chimney or vent system listed for them.
What does the -1 at the end of the 10" and 12" part numbers mean?
In Duravent's current Model BV catalog the 10" and 12" parts carry a -1 suffix, for example 10BV12-1, and join with the DuraTab method: align the notches, slide together and press in the tab. Duravent's earlier catalog listed the same sizes without the suffix and with a DuraLock snap-in joint. Duravent's instructions do not cover mixing the two, so ask us before joining a -1 part to older 10" or 12" pipe.
Who should install it?
Duravent warrants the vent fully only when a professional installer puts it in. A licensed gas professional should install the system to Duravent's instructions, NFPA 54 (the National Fuel Gas Code) and local codes. The appliance manufacturer's manual decides which venting is approved and the vent size and layout, so send us the appliance model and we will check.
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Manuals and warranty
Warranty terms come from Duravent and depend on the product. Read the manual and the warranty for your model before you order.
Our warranty library· Model BV Type B gas vent catalog (PDF)· Model BV installation instructions (PDF)Ask us before you order