Johns Manville Roofing Systems -OverFlow and FlowControl

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The OverFlow assembly provides additional water drainage, if necessary, when water level on the roof exceeds 4" (10.16 cm) in height. It is a spun aluminum round drain attachment that is designed to be used with all RetroDrains that are supplied with a clamping ring assembly.


Category: drains | roof drains | roof sumps...

MasterFormat: Membrane Roofing | Roof and Wall Specialties and Accessories | Roof Accessories...



Johns Manville Roofing Systems
717 17th Street
Denver, CO 80217
Tel: (303) 978-2000

sweetsinfo@jm.com

https://www.jm.com/

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OverFlow and FlowControl

The OverFlow assembly provides additional water drainage, if necessary, when water level on the roof exceeds 4" (10.16 cm) in height. It is a spun aluminum round drain attachment that is designed to be used with all RetroDrains that are supplied with a clamping ring assembly. Simple and easy to install. The FlowControl assembly provides a specific limited water flow rate under different water pressures (water head) on the roof, and performs as an overflow drain if the water level on the roof exceeds 4" (10.16 cm) in height. It is a spun aluminum round drain attachment with two specially designed weirs, and is compatible with RetroDrains that are supplied with a clamping ring assembly.

Material: Each is a one-piece, 0.050" (1.27 mm) spun aluminum attachment, 4" (10.16 cm) in height.

* OverFlow®, FlowControl®, and RetroDrain® are registered trademarks of OMG Roofing Products


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