Oatey 43904 4" PVC Backwater Valve Review

Oatey 43904 4" PVC Backwater Valve Reviewhttp://tinyurl.com/pp3lxsg Oatey 43904 4" PVC Backwater Valve 1-1/2-Inch or 2-Inch, 6-Inch x 6-Inch Utility Drain � Fits over 1 1/2-Inch Sch. 40 DWV pipe or into 2-Inch couplingProtects low areas or basements from backflow or waste from street sewers.Elastomeric seal in quick action flapper ensures a water tight seal.Threaded access cap incorporates a neoprene seal for positive sealing and can be tightened or removed by hand.Valve hub fits DWV pipe and can be adapted for sewer and drain pipe.