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Hercules^® Roof Drain

Hercules RetroDrains, the industry’s most popular retrofit drain, are available in 80 mm, 100 mm, 125 mm and 150 mm 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), and with a TPO or PVC coated flange for direct membrane attachment.

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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 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: 3.2 mm (0.125-in.) spun aluminum
Seal: Watertight U-Flow mechanical seal (requires U-Flow screwdriver for installation)
Flange: 445 mm (17.5-in.) diameter with sump area. TPO and PVC coated options available.
Strainer Dome: Cast aluminum or aluminum SuperDome
Stem: 305 mm (12-in.) length
Clamp Ring: Cast aluminum where applicable. *Not provided on TPO or PVC coated drains.

Performance Data

Flow Rates in Litres Per Second (l/s)

	Head Height of Water
Model	50 mm	75 mm	100 mm	125 mm
75 mm Clamp Ring Hercules	1.77 mm	2.9 mm	4.29 mm	5.05 mm
100 mm Clamp Ring Hercules	4.23 mm	5.49 mm	7.82 mm	9.91 mm
125 mm Clamp Ring Hercules	4.92 mm	9.27 mm	17.54 mm	24.35 mm
150 mm Clamp Ring Hercules	4.48 mm	8.52 mm	12.93 mm	14.57 mm

Packaging Info

Aluminum Hercules

Cat. No.	Description	Size (mm)	Packaging Quantity	Dimensional Weight (Kg)
HDAL3A	Aluminum Herc. w/ Clamping Ring	75	Each	12.2
HDAL4A	Aluminum Herc. w/ Clamping Ring	100	Each	12.2
HDAL5A	Aluminum Herc. w/ Clamping Ring	125	Each	12.2
HDAL6A	Aluminum Herc. w/ Clamping Ring	150	Each	12.2

TPO Coated Hercules

Cat. No.	Description	Size (mm)	Packaging Quantity	Dimensional Weight (Kg)
HDTPO3A	Herc. w/ TPO Coated Flange	75	Each	12.2
HDTPO4A	Herc. w/ TPO Coated Flange	100	Each	12.2
HDTPO5A	Herc. w/ TPO Coated Flange	125	Each	12.2
HDTPO6A	Herc. w/ TPO Coated Flange	150	Each	12.2

PVC Coated Hercules

Cat. No.	Description	Size (mm)	Packaging Quantity	Dimensional Weight (Kg)
HDPVC3A	Herc. w/ PVC Coated Flange	75	Each	12.2
HDPVC4A	Herc. w/ PVC Coated Flange	100	Each	12.2
HDPVC5A	Herc. w/ PVC Coated Flange	125	Each	12.2
HDPVC6A	Herc. w/ PVC Coated Flange	150	Each	12.2

Copper Hercules

Cat. No.	Description	Size (mm)	Packaging Quantity	Dimensional Weight (Kg)
HDCU3A	Copper Herc. w/ Clamping Ring	75	Each	12.2
HDCU4A	Copper Herc. w/ Clamping Ring	100	Each	12.2
HDCU5A	Copper Herc. w/ Clamping Ring	125	Each	12.2
HDCU6A	Copper Herc. w/ Clamping Ring	150	Each	12.2

Hercules^® Roof Drain

Features & Benefits

Product Use

Technical Data

Performance Data