Olyflow Heavy Duty TPO RetroDrain

Incorporates the Patented RAC Backflow Compression Seal, Activated at Drain Flange Level (Requires any 7/16" wrench)

For Retrofit Installations on TPO, includes a 17 1/2” TPO coated aluminum drain flange for direct hot air welding of membranes, RAC Backflow Compression Seal, and Aluminum Strainer. The 12” long drain stem is designed to bypass the existing drain bowl right to the water leader.