Z-Flex 4" Universal Appliance Adaptor with Back-Flow Preventer & Condensation Drain (2SVBFDPA04)

Z-Flex 4" Universal Appliance Adaptor with Back-Flow Preventer & Condensation Drain (2SVBFDPA04)

Z-Flex Z-Vent 4" Universal Appliance Adaptor with Back-Flow Preventer & Cond Drain (2SVBFDPA04) for Takagi, Paloma, Rheem, Noritz. This Universal Adaptor has seals on both ends (female on both ends and has a back-flow preventer built inand has a built-in condensation drain. The back-flow preventer is useful in colder climates to prevent cold air from flowing back into your heat exchanger where it could cause damage. The condensation drain provides a 3/8" drain point to remove rain water and condensation. The universal adaptor connects the tankless water heater to the 4" Z-Flex Z-Vent Stainless Steel Venting. 4" stainless steel venting for Category III Gas Appliances is the perfect venting option for the Bosch AquaStar 240FX, AquaStar 125FX, Takagi TK1, TK2, TKD20, TKJR, TK1S, TM1 Tankless Water Heaters. Our Z-Flex Z-Vent venting is rated AL29-4C.