Flow-Liner® Systems
WaBack Backwater Valve


Flow-Liner Systems, Ltd is the US & Canada Master Distributor for the WaBack backwater valve. This revolutionary patented device has been used in Europe for the past 20 years and is ideal for preventing backwater surges into sanitary and storm sewers. Its flow-through-channel is fully opened, which eliminates the need for a mechanical flapper. Now you can clean and televise sewers without the risk of getting caught in and damaging a traditional backwater valve flapper devise.

WaBack Backwater Valve

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back water valve