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Hercules®-Plus Roof Drain

With integrated vortex breaker strainer 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 3-, 4-, 5- and 6-inch sizes, and with a TPO or PVC coated flange for direct membrane attachment.

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Features & Benefits

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

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

Technical Data

Drain Body:   11 gauge (.125-in.) spun aluminum or copper (3- & 4-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:   Yellow Vortex Breaker made of cast aluminum (5-in. height)
Stem:   12-in. length
Clamp Ring:   Cast aluminum where applicable. *Not provided on TPO or PVC coated drains.

Performance Data

Performance Data

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Packaging Info

Packaging Info

Cat. No. Description Size (in) Packaging Quantity Dimensional Weight (lbs)
HDAL3V Aluminum Herc. w/ Clamping Ring 3 Each 27
HDAL4V Aluminum Herc. w/ Clamping Ring 4 Each 27
HDAL5V Aluminum Herc. w/ Clamping Ring 5 Each 27
HDAL6V Aluminum Herc. w/ Clamping Ring 6 Each 27

Cat. No. Description Size (in) Packaging Quantity Dimensional Weight (lbs)
HDTPO3V Herc. w/ TPO Coated Flange 3 Each 27
HDTPO4V Herc. w/ TPO Coated Flange 4 Each 27
HDTPO5V Herc. w/ TPO Coated Flange 5 Each 27
HDTPO6V Herc. w/ TPO Coated Flange 6 Each 27

Cat. No. Description Size (in) Packaging Quantity Dimensional Weight (lbs)
HDPVC3V Herc. w/ PVC Coated Flange 3 Each 27
HDPVC4V Herc. w/ PVC Coated Flange 4 Each 27
HDPVC5V Herc. w/ PVC Coated Flange 5 Each 27
HDPVC6V Herc. w/ PVC Coated Flange 6 Each 27

Cat. No. Description Size (in) Packaging Quantity Dimensional Weight (lbs)
HDCU3V Copper Herc. w/ Clamping Ring 3 Each 27
HDCU4V Copper Herc. w/ Clamping Ring 4 Each 27
HDCU5V Copper Herc. w/ Clamping Ring 5 Each 27
HDCU6V Copper Herc. w/ Clamping Ring 6 Each 27