The FlowControl is a spun aluminum drain attachment with two notches that provide a specific limited water flow rate under different water pressures on the roof. This product is designed and tested for application with all UFlow 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.
The FlowControl is a spun aluminum drain attachment with two notches that provide a specific limited water flow rate under different water pressures on the roof. This product is designed and tested for application with all UFlow 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.