Home Products Roof Drains Hercules®-Plus Roof Drain

Hercules^®-Plus Roof Drain

With integrated vortex breaker technology, the Hercules-Plus RetroDrain can provide up to 2.5 times greater water flow to reduce excessive water and weight from the roof faster. Hercules-Plus drains are available in 75 mm, 100 mm, 125 mm and 150 mm sizes, and with a TPO or PVC coated flange for direct membrane attachment.

Find a Distributor Find an OMG Representative

Features & Benefits

Water flow is up to 2.5 times faster versus the original Hercules Drains.
Bright yellow strainer domes are cast aluminum for strength and durability, and remain visible on the roof for improved safety.
U-Flow Seal exceeds the ANSI/SPRI RD1 standard for a secure, watertight connection.
Saves time and money by allowing easy installation from the rooftop without disturbing occupants.

Product Use

Hercules-Plus RetroDrains are designed to replace existing new construction drains in re-roofing applications. Installed from the roof surface, Hercules-Plus RetroDrains are engineered to be installed without removing the existing drain fixture. Hercules-Plus drains 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: Yellow Vortex Breaker made of cast aluminum
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-Plus	4.67 mm	6.94 mm	8.71 mm	13.88 mm
100 mm Clamp Ring Hercules-Plus	4.79 mm	11.86 mm	18.86 mm	25.87 mm
125 mm Clamp Ring Hercules-Plus	5.93 mm	9.4 mm	18.61 mm	27.32 mm
150 mm Clamp Ring Hercules-Plus	6.94 mm	15.33 mm	37.66 mm	47.44 mm *
*Test Rig could not go greater than 111.16 mm

Packaging Info

Cat. No.	Description	Size (mm)	Packaging Quantity	Dimensional Weight (Kg)
HDAL3V	Aluminum Herc. w/ Clamping Ring	75	Each	12.2
HDAL4V	Aluminum Herc. w/ Clamping Ring	100	Each	12.2
HDAL5V	Aluminum Herc. w/ Clamping Ring	125	Each	12.2
HDAL6V	Aluminum Herc. w/ Clamping Ring	150	Each	12.2

Cat. No.	Description	Size (mm)	Packaging Quantity	Dimensional Weight (Kg)
HDTPO3V	Herc. w/ TPO Coated Flange	75	Each	12.2
HDTPO4V	Herc. w/ TPO Coated Flange	100	Each	12.2
HDTPO5V	Herc. w/ TPO Coated Flange	125	Each	12.2
HDTPO6V	Herc. w/ TPO Coated Flange	150	Each	12.2

Cat. No.	Description	Size (mm)	Packaging Quantity	Dimensional Weight (Kg)
HDPVC3V	Herc. w/ PVC Coated Flange	75	Each	12.2
HDPVC4V	Herc. w/ PVC Coated Flange	100	Each	12.2
HDPVC5V	Herc. w/ PVC Coated Flange	125	Each	12.2
HDPVC6V	Herc. w/ PVC Coated Flange	150	Each	12.2

Cat. No.	Description	Size (mm)	Packaging Quantity	Dimensional Weight (Kg)
HDCU3V	Copper Herc. w/ Clamping Ring	75	Each	12.2
HDCU4V	Copper Herc. w/ Clamping Ring	100	Each	12.2
HDCU5V	Copper Herc. w/ Clamping Ring	125	Each	12.2
HDCU6V	Copper Herc. w/ Clamping Ring	150	Each	12.2