Eccotemp 3" x 6" Back Flow Preventer

This Z-Flex 6" back flow preventer is 3" in diameter. This is a must for vertical tankless water heater installations. The damper (back flow) prevents freezing air from coming back down through the vent stack and potentially causing freeze damage to the tankless water heater's heat exchanger, which is not covered under warranty. This single walled, stainless steel, category II/III venting accessory has gasketed connections for a seamless installation.

EccoTemp hereby warrants this product to be free of material defects in materials and workmanship when installed and operated according to EccoTemp’s installation and operating instructions. This Limited Warranty extends to the original purchaser and subsequent owners, but only while the product remains as the site of the original installation. This Limited Warranty terminates if moved or reinstalled at a new location. There are no warranties, express or implied made or given other than contained in this Limited Warranty. No agent, employee or representative of EccoTemp has any authority to bind EccoTemp to any representation or warranty concerning the Product not contained in this Limited Warranty. Except as expressly set forth herein, THERE ARE NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO ANY GOODS SOLD HEREUNDER. BUYER’S EXCLUSIVE REMEDY IS LIMITED TO REPAIR OR REPLACEMENT OF THE GOODS SOLD, AT ECCOTEMP’S DISCRETION. ECCOTEMP SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. Item Period of Coverage 10 year manufacturer warranty Coverages are void if the unit is used in a hot water circulation loop, in series with a circulation system or where an on-demand recirculation system is not incorporated. Owner is responsible for all other costs incidental to repair such as labor, shipping, delivery and permits. Proof of purchase required. Products repaired will be covered under this Limited Warranty for the remainder of term of the original purchase. This Limited Warranty becomes null and void if any of the following are determined to be a contributing factor to the failure of the product: 1. Abuse, misuse, alteration, neglect or misapplication; 2. Improper or inadequate maintenance; 3. Inadequate water quality; 4. Installation in a corrosive or otherwise destructive environment; 5. Freeze Damage; 6. Scale buildup; 7. Incorrect gas or water pressure; 8. Acts of force Majeure Shipping Related Costs: Within the first 30 days of purchase, Eccotemp will cover all ground shipping costs for warranty related issues, excluding AK, HI, Canada, and any location outside of the continental US. After the first 30 days of purchase, Eccotemp will cover all shipping costs to the customer for warranty related issues, excluding AK, HI, Canada, and any location outside of the continental US. After the first 30 days of purchase, the customer is responsible for all shipping to Eccotemp, regardless of reason or circumstance. The method for warranty related shipping will be Ground equivalent with the provider of Eccotemp’s choosing. AK, HI, Canada, and any location outside of the continental US, will be responsible for all shipping costs, regardless of reason or circumstance. All shipments of any type of product coming to Eccotemp for any reason must have an RGA for any repairs to be made. Please contact Eccotemp to obtain an RGA number prior to shipping anything to Eccotemp. Failure to do so could result in loss of product. Eccotemp will not be responsible for replacement due to loss or damage if these steps are not properly followed.