Hercules® Roof Drain

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Retrofit roof drain designed to fit into existing drain leaders in re-roofing applications

Hercules RetroDrains have a one-piece spun aluminum body, heavy-duty cast aluminum strainer dome, and clamping ring for strength and durability. The Hercules RetroDrain incorporates U-Flow® Seal technology for a mechanical watertight connection to PVC or cast iron pipes to prevent water from backup damage. Available in 3-, 4-, 5- and 6-inch sizes.

Hercules RetroDrains, the industry’s most popular retrofit drain, are available with a variety of options to support any project, including TPO or PVC coated flange for direct membrane attachment, copper stem and flange for more corrosive environments, and with OMG’s exclusive Vortex Breaker Strainer Dome, which can increase flow by up to 2.5 times.

Features & Benefits

  • One-piece seamless body provides strength and durability without separation of the flange from the stem. 
  • Extra-large 17.5-inch flange allows positive attachment of roof flashing membrane while the sump area facilitates drainage. 
  • Cast aluminum strainer dome and clamping ring. (Clamping ring not provided with TPO or PVC coated drains).
  • 12-in. long drain stem accommodates most existing field conditions with longer lengths available.
  • Saves time and money by allowing easy installation from the rooftop without disturbing occupants.

 

For detailed drawings, click here.  For 3-Part Specifications, click here.

Application
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Ordering Info
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Application

Hercules RetroDrains are designed to replace existing new construction drains in re-roofing applications. Installed from the roof surface, Hercules RetroDrains are engineered to be installed without removing the existing drain fixture. Hercules RetroDrains have a mechanical seal for direct connection to existing PVC or cast iron plumbing that meets the ANSI/SPRI RD-1 standard.

As with all building materials, it is the responsibility of the installer to review product use with a design professional to confirm safety, compatibility and acceptance with the roof cover manufacturer and local building codes.

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Ordering Information

SKUDescriptionSize (in.)Packaging Dimensional Weight (lbs.)
HDAL3A Aluminum Herc. w/ Clamping Ring 3 Each 27
HDAL4A Aluminum Herc. w/ Clamping Ring 4 Each 27
HDAL5A Aluminum Herc. w/ Clamping Ring 5 Each 27
HDAL6A Aluminum Herc. w/ Clamping Ring 6 Each 27

 

SKUDescriptionSize (in.)PackagingDimensional Weight (lbs.)
HDTPO3A Herc. w/ TPO Coated Flange 3 Each 27
HDTPO4A Herc. w/ TPO Coated Flange 4 Each 27
HDTPO5A Herc. w/ TPO Coated Flange 5 Each 27
HDTPO6A Herc. w/ TPO Coated Flange 6 Each 27

 

SKUDescriptionSize (in.)PackagingDimensional Weight (lbs.)
HDPVC3A Herc. w/ PVC Coated Flange 3 Each 27
HDPVC4A Herc. w/ PVC Coated Flange 4 Each 27
HDPVC5A Herc. w/ PVC Coated Flange 5 Each 27
HDPVC6A Herc. w/ PVC Coated Flange 6 Each 27

 

SKUDescriptionSize (in.)PackagingDimensional Weight (lbs.)
HDCU3A Copper Herc. w/ Clamping Ring 3 Each 27
HDCU4A Copper Herc. w/ Clamping Ring 4 Each 27
HDCU5A Copper Herc. w/ Clamping Ring 5 Each 27
HDCU6A Copper Herc. w/ Clamping Ring 6 Each 27

 

Related Products:

SKUDescriptionHeight (in.)PackagingWeight (lbs.)
VTBSTR10-YW Vortex Breaker Strainer Dome 5 Each 3

 

Physical Data:

The data below is constant for each Hercules RetroDrain

   
Drain Body 11 gauge (.125-in.) spun aluminum, .032-in. spun-punched copper (3- & 4-in.), or .050-in. spun-punched copper (5- & 6-in.)
Seal Watertight U-Flow mechanical seal (requires U-Flow screwdriver for installation)
Flange 17.5-inch diameter with sump area. TPO and PVC coated options available.
Strainer Dome Cast aluminum or aluminum SuperDome
Stem 12-in. length
Clamp Ring Cast aluminum where applicable. *Not provided on TPO or PVC coated drains.

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