Type B Gas Vent
Type B Gas Vent Systems Give You These Important Advantages
Safety of the Hart & Cooley® system is assured by the double-wall, air-insulated design and locking joints. Properly installed, the vent cannot come apart through vibration, and offers protection against vent failure or fire hazard. Type B Gas Vent is designed for negative pressure applications and flue gas temperatures not exceeding 400°F above ambient for Category I appliances.
Durability is the result of high-quality materials and workmanship, with galvanized outer pipe and aluminum inner pipe providing protection against corrosion and external damage.
Simple installation is achieved with a complete line of adjustable fittings and various lengths of pipe. Curled ends lock together for stability and easy assembly. A full set of installation instructions are supplied with all caps and supports.
HART & COOLEY® B-VENT complies with the latest Underwriters Laboratories Standard No. 441 and Bears the Mark.
B-Vent Features
- 3” to 12” inner and outer pipe curled together as an integral unit.
- 14” - 30” sizes have a snap-lock coupling system.
- Unique locking band provides 360° turning radius of the pipe and fittings.
- Locking band slides over tabs easily, locks firmly without twisting. Locking tabs hold pipe securely together, can be easily unlocked.
- Reinforced ends– curled bead on end of outer pipe for rigidity and strength.
- Deep Locking Groove assures solid joint and secure lock.
- Corrosion-resistant aluminum inner wall for rapid warm-up.
- Galvanized steel outer pipe for maximum protection.
- Positive Stop—provides proper alignment and positive fit for mating end of pipe or fitting
Typical Installation
Type BW gas vent
- Lock-Ring style connection.
- 3" to 12" pipe and fitting couplers overlap 1-3/8" when joined together; therefore, assembled length is 1-3/8" less than listed length.
- The allowable minimum clearance to combustibles is 1"
- Outside Diameter (OD) Sizes 3" through 6" is size plus 1/2". Sizes 7" through 12" is size plus 1"
- A full set of installation instructions are supplied with caps and supports.
- 14" to 30" pipe and fitting couplers overlap 1" when joined together; therefore, assembled length is 1" less than listed length.
- Snap-lock style
- Outside Diameter (OD) Sizes 14" through 30" is size plus 1"
- A full set of installation instructions are supplied with caps and supports.
- 14" elbow is adjustable.
- 16" through 30" elbows are fixed.
- Adapts and increases from locking ring style, small-diameter vent pipe to new snap-lock large-diameter vent pipe.
- Prevents rain and debris from entering the vent.
- External screen prevents entry of birds.
- 3" through 6"
- Prevents rain & debris from entering the vent
- Two Locking Tabs ensure a secure connection even in high wind environments
- Used in high wind conditions without sacrificing draft and safety or risking pilot light blow out
- Barriers provided in cap opening spaced less than 1" are designed to resist entry of birds.
- Snap-locks onto pipe.
- Barriers provided in cap opening spaced less than 1" are designed to resist entry of birds.
- Slips into most B Vent.
- Adapts Hart & Cooley vent to other brands of B vent (theirs to ours).
- Adapts thicker wall brands of B vent to Hart&Cooley vent (theirs to ours).
- Adapts Hart & Cooley vent to other brands of B vent (ours to theirs).
- Available in 3" through 8".
- Supports 20 feet of pipe.
- Acts as a firestop.
- Supports 30 feet of pipe.
- Acts as a firestop.
- 7", 8" and 10" not UL-listed.
- Supports 30 feet of pipe.
- To cover a rough opening.
- Available in 3" through 12".
- 8" through 12" bracket used with perforated pipe strap supplied by others.
- Provides necessary clearance to combustibles.
- Sleeve is adjustable from 3" to 6".
- Designed to be snug around vent pipe for a weather-tight fit.
- For use with roof flashing and caulk.
- Single-wall flexible construction.
- Includes an integral appliance draft hood connector for fast installation.
- Locks onto Hart & Cooley Type B gas vent.
- Requires only 1" clearance to combustibles per installation instructions.
- UL-listed for use as a connection from an appliance to Type B gas vent in conditioned spaces only. Do not enclose.
- Available in 3" through 5" diameters and 1' through 5' lengths.
- Features double-wall, air-insulated construction.
- Has Type B male/female ends for easy connection with Hart & Cooley vent.
- Requires only 1" clearance to combustibles.
- UL-listed for use as a connection from an appliance to Type B gas vent and as a segment of Type B gas vent.
- Can be used in unconditioned spaces, such as attics and crawl spaces. Do not enclose.
- Available in 3" through 5" diameters and 2' through 5' lengths.
- Offers all the advantages of round pipe, and may be used for the following types of installation.
4" Oval:
- Conventional Type B
- Type B-2x4 when used with firestop
- Type BW-2x4 with recessed heater
5" Oval:
- Type B
- Type B-2x4
- The flat 45° elbow is used in pairs where offsets are desired in 1" minimum clearance enclosures or open spaces, such as attics or basements. Add pipe sections between pairs to produce additional offset.
- The standard 45° elbow is used in pairs where offsets are desired in 1" minimum clearance enclosures or open spaces, such as attics or basements. Add pipe sections between pairs to produce additional offset.
- The oval-to-round adapter is used for conversion of vent from oval to round.
- Requires use of RAA male adapter to continue with round.
- The round-to-oval adapter is used for conversion of vent from round to oval.
- Requires use of RRA female adapter to come from round.
- The branch size and trunk size have the same effective area. The tee branch accepts either double- or single-wall pipe.
- The adjustable length telescopes onto standard pipe sections to permit adjustments from 3" to 10".
- The all-pitch flashing is installed either parallel or perpendicular to the roof ridge, and fits roof pitches flat to 5/12.
- The storm collar serves as a counter flashing and requires mastic to seal to the vent pipe.
- The tee cap is used for closing off the bottom of the tee.
- The tee support is used to support and center the tee. Use with the tee cap shown below.
- The Type BW hold-down plate is required for connecting Type BW vent to a wall furnace outlet.
- Type BW plate spacers are required at the first ceiling level above a wall furnace to center and space vent properly and to provide the required opening between floors. Firestop spacers must be used at subsequent levels.
- The firestop spacers center vent in 16" O.C. stud space and serve as a firestop at the ceiling level. This is a required component for Type B 2 x 4 and multi-story Type BW installations.
- Kits include flexible length, round top,flashing, mortar guard
- Standard kit lengths of 15', 25' and 35'
- Available in 3", 4", 5", 6", 7" and 8" diameters in both kits and 10' extensions
- 10' insulated sleeve has tough polyethylene exterior (sold separately)
- Extension kit includes Flexi-Liner with attached connector and fastener package.
- Pull-downs stretch and lead the Flexi-Liner down the chimney
- Liner Material Aluminum 3003, 2-ply (0.005"each)
- Maximum Flue Gas Temperature 470°F
- Stretch Ratio 5:1 (approximate)
- Clearances 0" between liner and chimney interior 0" between combustible materials and chimney exterior
- Liner listed to UL1777 and ULC-S635
- Compatible with Type B gas vent systems
- Lifetime warranty
- Insulation sleeve with tough poly exterior
- Cable ties included
- Adapter to transition from all brands of listed Type B Gas Vent to ALK Liner
- 10' flexible liner length.
- Includes coupler and fastener package.
- UL-listed.