DuraVent Model BV Universal Cap: a high wind cap for the six largest sizes
The DuraVent Model BV Universal Cap is a cap for the top of a vertical gas vent. It helps keep exhaust moving out in high winds and fits the six largest Model BV sizes, from 20 to 30 inch. The cap slips inside the inner wall of the top pipe rather than fastening to the pipe’s lock. That fit is what DuraVent means by “universal.” 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 20, 22, 24, 26, 28, or 30 inch size to match your vent. These caps are for vertical vents only. At this size, the cap must stand 2 feet above the roof opening and 2 feet above anything within 10 feet, regardless of roof slope. The large diameter flashings, which cover the roof opening around the pipe, fit roofs from flat to 6 in 12 only. Need the collar that sits below the cap on the flashing? See the DuraVent Model BV Large Diameter Storm Collar. The DuraVent Model BV Universal Cap ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 20BVVT | 22BVVT | 24BVVT | 26BVVT | 28BVVT | 30BVVT
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).