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Hercules^® Roof Drain

Hercules RetroDrains, the industry’s most popular retrofit drain, are available in 3-, 4-, 5- and 6-inch sizes and with a variety of options to support any project, including OMG’s exclusive Vortex Breaker Strainer Dome, which can increase flow by up to 2.5 times (see Hercules-Plus), TPO or PVC coated flange for direct membrane attachment, and with a copper stem and flange for more corrosive environments.

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Features & Benefits

Saves time and money by allowing easy installation from the rooftop without disturbing occupants.
Cast aluminum strainer dome and clamping ring that will not rust for long term durability and performance.
U-Flow Seals exceed the ANSI/SPRI RD1 (introduced in 2004) standard for a secure, watertight connection.

Product Use

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.

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.

Technical Data

Drain Body: 11 gauge (.125-in.) spun aluminum or copper
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, aluminum SuperDome or Vortex Breaker dome
Stem: 12-in. length
Clamp Ring: Cast aluminum where applicable. *Not provided on TPO or PVC coated drains.

ANSI/SPRI RD-1 – is a national performance standard for retrofit roof drains. While most drains are not tested to this standard, Hercules RetroDrains exceed the standard, which requires the seal to hold a 10-ft. column of water for 24 hours without leaking.

Performance Data

Packaging Info

Aluminum Hercules

Cat. No.	Description	Size (in)	Packaging Quantity	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

TPO Coated Hercules

Cat. No.	Description	Size (in)	Packaging Quantity	Dimensional 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

PVC Coated Hercules

Cat. No.	Description	Size (in)	Packaging Quantity	Dimensional 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

Copper Hercules

Cat. No.	Description	Size (in)	Packaging Quantity	Dimensional 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