Choice of 3 Bolt / 10" Poly (Included) or Cast Iron Strainer

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Price: $329.35
    Item #305-BCTS89
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    Description

    The Marathon BCTS89 Copper-Tite is an 8-inch retrofit roof drain made from heavy copper with a factory-applied expanding anti-backup tape seal. It includes a 10-inch ABS clamping ring and 10-inch polyethylene strainer. Designed for use in reroof or retrofit applications, it offers a watertight solution with minimal disturbance to existing roofing systems. This model features a 9-inch outlet length and large flange for secure installation.

    Key Features:

    • 8-inch outlet size with retrofit copper body
    • Expanding anti-backup seal (factory-applied tape) to prevent leakage and backflow
    • Large flange option (18-inch) for full coverage
    • Standard 10-inch ABS clamping ring and 10-inch polyethylene strainer included
    • 9-inch outlet length for proper insertion into existing piping

    Specifications

    • Model / Part Number: BCTS89 (Large Flange)
    • Outlet size: 8″
    • Outlet length: 9″
    • Fits existing drain pipe size: 5-7/8″ – 6-1/4″
    • Body: Copper
    • Flange: 18″ large flange (LF)
    • Clamping Ring: 10″ ABS
    • Strainer: 10″ polyethylene
    • Packaging: 1 per carton

    How To

    • Select the BCTS89 model that matches your existing 8-inch outlet pipe.
    • Clean and prepare the existing drain sleeve and roof membrane areas.
    • Test fit the drain into the existing sleeve before releasing the tape restraint.
    • Remove the restraint and insert the drain so the expanding tape fills the gap around the outlet.
    • Seat the flange flush on the roof surface.
    • Attach the 10-inch ABS clamping ring and install the 10-inch polyethylene strainer.
    • Flash the flange according to the roofing membrane manufacturer’s instructions.

    FAQs

    Q: What flange size is standard for BCTS89?
    A: It is supplied with an 18-inch large flange.

    Q: What is the outlet length?
    A: The outlet length is 9 inches.

    Q: What pipe sizes does this retrofit drain fit into?
    A: It fits existing pipe with inside diameters from 5-7/8″ to 6-1/4″.

    Q: What materials are used for body, ring, and strainer?
    A: Copper body; 10-inch ABS clamping ring; 10-inch polyethylene strainer.

    Q: How does the anti-backup seal work?
    A: Expanding tape (factory-applied) is released when the drain is inserted, filling the gap between the drain outlet and the existing sleeve to provide a watertight and backflow-resistant seal.

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