DuraVent Model BV Low Profile High Wind Cap: a shorter cap for windy roofs
The DuraVent Model BV Low Profile High Wind Cap is a cap for the top of a vertical gas vent above the roof. It sits lower than the standard high wind cap. It helps exhaust keep moving on windy days and prevents downdrafts, when wind pushes exhaust back down the pipe. 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 3, 4, 5, or 6 inch diameter to match your Model BV vent.
The cap pushes into the vent until its locking clip clicks into place. To remove it, pull upward evenly. Inside the Model BV pipe, an air gap separates the aluminum inner pipe from the galvanized steel outer pipe. This keeps the inside hot so exhaust rises well while the outside stays cool. The inner pipe attaches at just one end, letting it expand and contract quietly. Need the standard cap instead? See the DuraVent Model BV DuraCap standard cap. The DuraVent Model BV Low Profile High Wind Cap ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 3BVLHWT | 4BVLHWT | 5BVLHWT | 6BVLHWT
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).