Marathon Roofing Products - Aluminator Pro - Retrofit Roof Drain

The Marathon Aluminator Pro Retrofit Roof Drain series (BALUM2CRPRO through BALUM6CRPRO) delivers heavy gauge spun aluminum construction with upgraded coated components. Each drain includes a coated 10″ aluminum clamping ring, coated 10″ aluminum Pro Dome security strainer, and ProSeal rubber mechanical seal. With a 16″ flange and 12″ outlet, the Pro series ensures strength, easy installation, and dependable water flow performance across sizes 2″ to 6″. Seal dimensions and flow rates are engineered to match precise pipe fits.

Key Features:

• Sizes 2″–6″ (BALUM2CRPRO–BALUM6CRPRO)

• Heavy gauge spun aluminum body for durability

• Coated aluminum clamping ring and Pro Dome security strainer

• ProSeal mechanical seal with precision fit and expansion specs

• High flow rates with size-specific performance

• Body material: Heavy gauge spun aluminum
• Flange diameter: 16″
• Outlet length: 12″
• Clamping ring: Coated 10″ aluminum
• Strainer: Coated 10″ aluminum Pro Dome
• Seal: ProSeal rubber mechanical seal
• Sizes and performance:
  - 3″ model (BALUM3CRPRO)
  – Starting OD of Seal/Outlet: 2.85″
  – Fits Pipe ID: 2 7/8″–3 1/4″
  – Max Seal Expansion Diameter: 3.4″
  – ID of Seal: 2.19″
  – Flow Capacity: 45 GPM • 4″ model (BALUM4CRPRO)
  – Starting OD of Seal/Outlet: 3.8″
  – Fits Pipe ID: 3 7/8″–4 1/4″
  – Max Seal Expansion Diameter: 4.4″
  – ID of Seal: 3.12″
  – Flow Capacity: 65 GPM • 5″ model (BALUM5CRPRO)
  – Starting OD of Seal/Outlet: 4.8″
  – Fits Pipe ID: 4 7/8″–5 1/4″
  – Max Seal Expansion Diameter: 5.4″
  – ID of Seal: 4.15″
  – Flow Capacity: 180 GPM • 6″ model (BALUM6CRPRO)
  – Starting OD of Seal/Outlet: 5.7″
  – Fits Pipe ID: 5 7/8″–6 1/4″
  – Max Seal Expansion Diameter: 6.6″
  – ID of Seal: 5.0″
  – Flow Capacity: 210 GPM

• Choose the correct drain size SKU (2″–6″) to match outlet pipe.
• Clean existing drain area and roof membrane surface.
• Place drain so 16″ flange is flush and outlet aligns with existing pipe.
• Insert and seat the ProSeal seal, allowing for proper expansion fit.
• Secure the coated aluminum clamping ring and Pro Dome strainer.
• Apply PVC or TPO flange coating if required by the roofing system.

Q: What makes the Pro version different from the standard Aluminator?
A: The Pro series includes a coated Pro Dome strainer and coated clamping ring for enhanced durability and protection.

Q: What seal dimensions are provided?
A: Each size has engineered starting OD, expansion range, and ID to ensure a snug fit inside pipe diameters.

Q: What are the flow capacities?
A: Approx. 45 GPM (3″), 65 GPM (4″), 180 GPM (5″), and 210 GPM (6″).

Q: What materials are used in construction?
A: Heavy gauge spun aluminum body, coated aluminum clamping ring, coated Pro Dome strainer, and ProSeal rubber seal.

Q: What are the flange and outlet dimensions?
A: All models feature a 16″ flange and 12″ outlet.