Marathon 10" ProMaxx Aluminator Retrofit Roof Drain

The Marathon 10" ProMaxx Aluminator is a spun aluminum retrofit roof drain designed to fit into existing roof drain pipes. It includes a bolt-in-place PVC strainer as the standard strainer option and is built with a heavy gauge spun aluminum body for commercial roofing applications.

This retrofit drain is designed for fast installation and maintenance, with a large flange, aluminum clamping ring, and an outlet sized for 9.75" to 10.05" pipe openings. Optional expanding tape can be used to help prevent backflow issues by expanding between the drain and existing drain sleeve.

Key features:

• Heavy gauge spun aluminum construction
• Bolt-in-place PVC strainer included as standard
• Large 18" flange with 12" long outlet
• 14" aluminum clamping ring
• Optional expanding tape available for anti-backup protection
• Designed for quick installation and maintenance
• Exceeds ANSI/SPRI RD-1 standard

Brand: Marathon Roofing Products
Product name: 10" ProMaxx Aluminator
Product type: Spun aluminum retrofit roof drain
Drain size: 10"
Retrofit drain outside diameter: 9.625" OD
Pipe size fit range: 9.75"–10.05"
Outlet length: 12"
Flange diameter: 18"
Clamping ring diameter: 14"
Body material: Heavy gauge spun aluminum
Standard strainer: Bolt-in-place PVC strainer
Clamping ring material: Aluminum
Optional anti-backup accessory: Expanding tape
Standard: Exceeds ANSI/SPRI RD-1
Installation type: Retrofit drain insert for existing drain pipe
Maintenance: Designed for quick installation and maintenance

Step 1: Determine the exact dimension of the existing drain pipe. Select the appropriate drain to fit inside the pipe. Retrofit drains may be set in a shallow bowl or directly on roof membrane with deck opening at least 1" greater than the leader size into which the drain is inserted.

Step 2: If supplied with expanding tape, remove the exterior restraining tape and immediately set the retrofit drain in place. The released tape gradually expands to fill the space between the drain and existing drain sleeve, helping make the connection watertight.

Step 3: Flash the drain flange in accordance with the membrane manufacturer’s instructions.