DuraVent Model BV Oval 45 Degree Flat Elbow: a fixed bend for shifting an oval vent
The DuraVent Model BV Oval 45 Degree Flat Elbow is a fixed 45 degree bend for an oval gas vent. It does the same job as the standard elbow but is slightly larger in both directions. Use two to move the vent sideways in an enclosure with 1 inch clearance or an open attic or basement. Pipe between the elbows adds more sideways reach. Model BV is DuraVent’s Type B gas vent, the double wall pipe that carries the exhaust from a gas furnace, boiler, or water heater out of the house.
Choose a 4, 5, or 6 inch size. Above the last ceiling, the vent can stay oval or change to round with an oval to round adapter. DuraVent notes that round roof flashings, caps, and fittings cost less. The oval flashing, which covers the roof opening, comes only in 4 inch for roofs from flat to 5 in 12. A 5 or 6 inch oval run, or a steeper roof, must finish in round. Need the smaller elbow? See the DuraVent Model BV Oval 45 Degree Standard Elbow. The DuraVent Model BV Oval 45 Degree Flat Elbow ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 4BVOL45F | 5BVOL45F | 6BVOL45F
Applications
Duravent’s Type B Gas Vent system. Use with natural gas or liquid propane Category I and draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent. Applications include: natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.
Materials and Construction
Round Type B Gas Vent 3″ – 8″ and Oval 4″ – 6″: Aluminum .012″ inner wall, galvanized .018″ outer wall, in Canada, the lengths have a galvalume .018″ outer wall. The 3″ – 8″ Round gas vent features DuraLock® and DuraTab® . The Oval gas vent features the button lock.
Round Type B Gas Vent 10″ – 18″: Aluminum .014″ inner wall, galvanized .018″ outer wall. DuraLock® feature for 10″ and larger diameters.
Round Type B Gas Vent 20″ – 30″: aluminum .023″ inner wall, galvanized .018″ outer wall. DuraLock® feature for 10″ and larger diameters.
Clearances
Clearances to combustible materials in single and multi-family dwellings:
- 1″ Clearance – USA – 3″ to 30″
- 1″ Clearance – Canada – 3″ to 24″
- 2″ Clearance – Canada – 26″ to 30″
Annular insulating air space
- 3″ – 8″ Round Vent: 1/4″ air space
- 4″ – 6″ Oval Vent: 1/4″ air space
- 10″ – 30″ Round Vent: 1/2″ air space
Diameters
Listings
UL Listed to UL 441 and CAN/ULC-S605 (MH2848 and MH17667).