Z105

Control-Flo Roof Drain

The Zurn Z105 15" diameter Control-Flo roof drain for dead-level roof construction has a Dura-Coated cast iron body. The Control-Flo weir is linear functioning with integral membrane flashing clamp/gravel guard and Poly-Dome.

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  • Control-Flo drain with parabolic weir
  • Restricts flow to 10 GPM per inch of water above drain body
  • Clamping collar and poly-dome

Frequently Asked Questions

It is not recommended to place the Z105 in a recessed sump within the roof construction because water will fill the sump quickly and potentially spill over the top of the Z105 weir, entering the drain unrestricted.​

While it is possible for Zurn to supply the Z105 with a 6" (or larger sized) outlet, we do not typically offer it because the restricted flows through the Z105 do not require that large of a pipe size.​
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