Marathon Roofing Products - Extended Aluminator Roof Drain

The Marathon Extended Aluminator Roof Drain series (BALUM2CRXL through BALUM6CRPXL) is a heavy gauge spun aluminum retrofit drain designed for extended outlet applications. It features a 22-inch drain outlet (plus approximately 2-inch protrusion with seal), a cast aluminum ring and strainer, and standard ProSeal mechanical seal to prevent backflow. Offered in sizes from 2″ to 6″, this drain includes options for PVC or TPO coated flange and delivers high flow performance under a peak water head up to 3-1/4″.

Key Features:

• All-aluminum construction with heavy gauge spun body
• Extended outlet length of 22″ (plus seal depth) for deep or vertical drop applications
• Cast aluminum clamping ring and aluminum strainer included
• ProSeal mechanical seal included to prevent water backup
• Available in sizes 2″, 3″, 4″, 5″, 6″

• Body material: Heavy gauge spun aluminum
• Flange diameter: 16″
• Outlet (stem) length: 22″ (plus approx. 2″ with seal)
• Clamping ring: Cast aluminum, 10″ diameter
• Strainer: Cast aluminum, 10″ diameter
• Sizes available: 2″ (BALUM2CRXL), 3″ (BALUM3CRPXL), 4″ (BALUM4CRPXL), 5″ (BALUM5CRPXL), 6″ (BALUM6CRPXL)
• Seal: ProSeal mechanical seal

• Choose the correct size drain SKU for the existing outlet pipe (2-6″).
• Ensure the roof opening and existing drain are cleaned and free of obstructions.
• Position the drain body so the 22-inch outlet aligns properly with the existing drain pipe, and place the flange flat on the roof membrane.
• Insert and seat the ProSeal mechanical seal according to vendor's instructions.
• Secure the cast aluminum clamping ring and attach the cast aluminum strainer.
• If specified, apply PVC or TPO coating to the flange for membrane compatibility.

Q: What sizes are offered in this Extended Aluminator series?
A: Sizes include 2″, 3″, 4″, 5″, and 6″.

Q: What is the outlet length of these drains?
A: The drains have a 22-inch outlet (plus approx. 2″ when including the ProSeal seal).

Q: What seal type is used?
A: A ProSeal mechanical seal is standard to prevent water backflow.

Q: What material are the ring and strainer made of?
A: Both the clamping ring and strainer are cast aluminum.

Q: Are there flange coating options for different roof membranes?
A: Yes. PVC or TPO coating for the flange is optional.