DuraVent Model BV Oval Adjustable Pipe: fills the gap between fixed vent lengths
The DuraVent Model BV Oval Adjustable Pipe is a sliding section of oval gas vent that fills gaps in a run. The 12 inch piece fits over a fixed pipe length to add anywhere from 3 to 10 inches. That lets the run reach a ceiling spacer or the fitting that changes it to round pipe without cutting the vent. 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. Use it with an appliance approved for Type B vent.
Choose a 4, 5, or 6 inch size to match your oval vent. This is DuraVent’s only adjustable oval length, and it cannot support the pipe beneath it. Allow for 1 inch taken up at each joint when adding up the run. Oval sections connect with a joining sleeve pressed into place one side at a time. A screwdriver can gently release the joint without damaging it. Need the fixed sections? See the DuraVent Model BV Oval Rigid Pipe fixed lengths. The DuraVent Model BV Oval Adjustable Pipe ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 4BVO12A | 5BVO12A | 6BVO12A
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).