The FlowControl is a spun aluminum round drain attachment with two specially designed notches that provide a specific limited water flow rate under different water pressures (water head) on the roof. This product is designed and tested for application with all U-Flow retrofit drains that are supplied with a clamping ring assembly. If the water level on the roof exceeds 4" in height the FlowControl drain assembly will perform as an overflow drain.

Features & Benefits

Application

OlyFlow RetroDrains are designed to replace existing drains in reroofing applications. Installed from the roof surface, the OlyFlow RetroDrains are engineered to be installed without removing the existing plumbing or fixture while providing a watertight connection to the roof system and the existing plumbing.