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Ventinox AL29-4C
Flex Liner for Gas
Ventinox VG Liner is the best material for gas heating appliances:
 Welded, not interlocked or crimpedReasonably priced
Available in 3" through 12" diameters
Can be ordered in job specific lengths
Made from the right metals for the job
Water and vapor tight design
Exhibits little or no expansion or contraction during operating cycles.
Features an ideal installation weight
Offers a complete assortment of parts and components
Makes pop rivets unnecessary
Made in the USA
Experience gained in the venting industry demonstrates that a heating system is not complete unless a proper vent system is provided for a boiler or furnace. The benefits of a higher-quality, higher-efficiency appliance will be negated by improper venting. To maximiz efficiency ratings of the appliance alone is a shortsighted approach for serving the energy conscious public. It is necessary to optimize the venting system to maximize the overall performance, efficiency and safety of the heating system as a whole.
Downloads:
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 Ventinox AL29-4C Stainless Steel Liner: the preferred method for lining chimneys serving a vented gas appliance.
A Ventinox liner eliminates moisture problems (and the subsequent damage moisture creates) by providing a reliable venting environment for gas appliances.
Condensation causes significant problems in masonry chimneys. Acids breat down and erode clay tiles, bricks and mortar, destroying the chimney fromthe inside. Central heating units in the 80% to 83% efficiency range emit low temperature flue gases into the base of a chimney. Experience shows that even appliances with lowere efficiency rathings (higher flue gas temperatures) can produce condensation, especially during the first few minutes of their "on" cycle. This probability increases when a furnace and water heater are vented into the same flue and the water heater operates during the "off" cycle ofthe boiler or furnace. In cold climates, or during cold weather periods in warmer regions, rapid cooling of flue gases often leads to condensation on cold flue surfaces.
Condensation problems can be identified by spalling bricks, chips of flue tiles and mortar in the cleanoout pit, signs of mildew and moss on walls, white efflorescence stain on brickwork, leaks around cleanout doors and water stains on walls around or near the chimney.
Even without acids, moisture produced by a boiler or furnace can cause significant damage. In colder climates, wet exterio chimneys can experience numerous freeze and thaw cycles each da. This causes the erosion of mortar joints and the cracking and spalling of bricks and clay tiles.
Deterioration is accelerated in flues previously used to vent oil and coal heaters. Chemical deposits left by these fuels now combine with water condensation from the gas appliance to form additinal destructive acides that can attack masonry and clay tiles. When aluminum liners are used in such contaminated environments, they can be destroyed in short order from the outside in.
Why is Ventinox VG liner the best choice for the job? Ventinox VG liner is constructed from AL29-4C, a specifically designed ferritic stainless steel containing 29% chromium and 4% molybednum as critical alloy additions. 0.05% titanium is added to combine with carbon and nitrogen to improve weldability, thoughness and resistance to intergranular corrosion. This combination represents the best balance of corrosion resistance, ductility and cost.
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Tee with removable take-off which is tightened from within the tee snout. Tee cap sold separately, see below.
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item #
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n/a
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320204
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320205
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320206
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320207
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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320208
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320209
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320210
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320211
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320212
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Tee Cap sold separately. Seals the bottom of the liner by attaching t the bottom of a tee.
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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n/a
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320304
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320305
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320306
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320307
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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320308
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320309
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320310
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320311
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320312
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Coupler has an inner sleeve that creates a dripless connection when faastening 2 pieces of liner together.
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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320403
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320404
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320405
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320406
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320407
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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320408
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320409
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320410
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320411
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320412
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Sleeve has one male/one female end. Allows connection of Ventinox liner to the flue collar on an appliance.
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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320503
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320504
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320505
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320506
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320507
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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320508
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320509
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320510
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320511
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320512
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The components below are also used with Ventinox HiFlex liner
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Swivel tee adapter, allows the tee body to be rotated to align the sount after the liner is inside the chimney.
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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n/a
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n/a
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316139
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316140
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316141
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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n/a
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n/a
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n/a
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n/a
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n/a
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Elbow, 90 degree, adjustable
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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323603
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320604
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320605
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320606
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320607
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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320608
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320609
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320610
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320611
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320612
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Elbow, 45 degree, adjustable
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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320703
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320704
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320705
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320706
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320707
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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320708
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320709
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320710
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320711
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320712
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Baseplate accepts the sleeve and can be used to support liner at the bottom. Made of 304 stainless.
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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320803
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320804
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320805
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320806
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320807
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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320808
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323809
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323810
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323811
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323812
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Top Kit consists of storm Collar and a top plate. Both are made of 304 stainless.
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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321503
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321504
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321505
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321506
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321507
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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321508
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321509
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321510
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321511
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321512
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Storm Collar allows condensation to drip back inot the flue
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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321103
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321104
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321105
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321106
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321107
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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321108
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321109
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321110
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321111
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321112
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Top Plate is used in conjunction with Raincap to support the liner from the top. 304 stainless
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Dia.
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3"
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4"
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5"
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6"
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7"
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OD
Item#
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13"x13"
321203
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13"x13"
321204
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13"x13"
321205
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13"x13"
321206
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13"x13"
321207
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OD
Item#
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8"x8"
n/a
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8"x8"
n/a
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8"x8"
321588
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8"x8"
321688
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8"x8"
n/a
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OD
Item#
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8"x13"
n/a
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8"x13"
n/a
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8"x13"
321583
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8"x13"
321583
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8"x13"
n/a
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Dia.
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8"
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9"
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10"
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11"
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12"
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OD
Item#
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13"x13"
321208
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13"x13"
321209
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13"x13"
321210
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13"x13"
321211
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13"x13"
321212
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Rain Cap inverted cone design allows condensation to drip back into the flue to prevent exterior chimney staining
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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321303
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321304
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321305
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321306
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321307
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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321308
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321309
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321310
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321311
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321312
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Bird Screen attaches to raincap to keep birds and mammals out of the chimney
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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321703
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321704
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321705
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321706
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321707
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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321708
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321709
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321710
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321711
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321712
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Guide Cone screws onto the corrugations of Ventinox liner for a snug fit; helps in guiding liner down the flue
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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321403
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321404
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321405
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321406
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321407
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Dia.
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8"
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9"
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10"
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11"
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12"
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Item#
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321408
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321409
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321410
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321411
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321412
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HF/V Adapter
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Dia.
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3"
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4"
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5"
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6"
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7"
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Item#
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n/a
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n/a
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343305
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343306
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343307
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Dia.
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