Z-Flex Vent 3" or 4" Termination Hood with Backflow Preventer Damper
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Hardware / Heating, Ventilation & Air Conditioning

Z-Flex Vent 3" or 4" Termination Hood with Backflow Preventer Damper

$142.46
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Vent Termination Hood with backflow preventer (damper). Single not double wall pipe, but will work properly with double wall pipe. Essential for tankless water heater venting, as it prevents freezing air from entering into the venting system and freezing the heater's pipes, damaging the heater and voiding the warranty. Z-Vent does not manufacture a 5" vent termination hood with damper...only 3" and 4". Flange dimensions for the 4" diameter hood: 7.25" x 7.25". Features: • Simple gasketed connection requires no sealant• Offers the highest pressure rating available• Can be cut to desired length on site• Smooth finish and perfect fit with new fusion-welded pipe seams• Compatible with all single-wall Z-Flex Z-Vents• Vent material: AL29-4C stainless steel• Certification: Tested to meet or exceed Underwriters Laboratories (UL) spec UL1738 and ULS636• Approval: Cat II, III, IV venting• Limited Lifetime Warranty Compatibility and cross reference: The 4" diameter version of this item is compatible with the following tankless water heaters, as shown in their manual: American Water Heaters GT-510-P/N Indoor Liquid Propane/Natural Gas American Water Heaters GT-310-P/N Indoor Liquid Propane/Natural Gas American Water Heaters GT110-P/N Indoor Liquid Propane/Natural Gas A. O. Smith ATI-510-N/P Indoor Propane/Natural GasA. O. Smith ATI-310-N/P Indoor Propane/Natural GasA. O. Smith ATI-110-N/P Indoor Propane/Natural GasGSW GSWT-110/310GSW GSWT-520/540Marey 5L*Marey 10L*Reliance Water Heaters TS-510-GIReliance Water Heaters TS-310-GIReliance Water Heaters TS-110-GIState Industries 510 SeriesState Industries 310 Series State Industries 110 Series Takagi T-T-KJr2 Indoor/Outdoor Propane/NGTakagi T-K4 Indoor/Outdoor Propane/NG * Since these heaters are natural rise systems, they can only utilize a backflow preventer (damper) if they also include a low CFM booster fan and a thermostat to regulate when the fan should turn on. Downloads Z-Vent SVE Series IV Installation and Maintenance Instructions, 3" to 24", Single & Double Wall Z-Vent Dimensional Specifications 2SVSHTD03

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