- Heavy-Duty Forged Cast Iron: Cast from commercial-grade iron to deliver exceptional structural strength, ensuring high crush resistance and long-term durability in demanding industrial roofing applications.
- Watertight Membrane Compression: Engineered to anchor and compress roofing membranes or flashing flatly against the drain body flange, eliminating gaps to establish an absolute watertight seal.
- Signature Green Protective Coating: Finished with a durable, weather-resistant green Duco coating that protects the underlying metal from rust, corrosion, standing water, and typical jobsite grime.
- Precise Josam 21500 Bolt Geometry: Features an exact 13-3/4" outside diameter with a specialized bolt pattern, measuring 10-3/4" bolt-to-bolt at 180-degrees and 7-1/2" between adjacent bolt positions for a perfect flush fit.
Price: $192.00
Item #316-029269F
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Description
The Josam 21504 Cast Iron Clamp Ring is made from durable cast iron with a protective green coating and is designed for use with Josam 21500-series roof drains. It features an outside diameter of 13-3/4 inches with bolt-to-bolt diameters of 10-3/4 inches (180°) and 7-1/2 inches. This ring securely fastens the roofing membrane or flashing to the drain body, ensuring a watertight seal.
Key Features
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Material: cast iron
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Color: green
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Outside diameter: 13-3/4 inches
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180° bolt-to-bolt diameter: 10-3/4 inches
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Bolt-to-bolt spacing: 7-1/2 inches
Specifications
Manufacturer: Josam Company
Model/SKU: 21504
Material: Cast iron (coated)
Color: Green
Outside diameter: 13-3/4 inches
180° bolt-to-bolt diameter: 10-3/4 inches
Bolt-to-bolt spacing: 7-1/2 inches
Quantity: Kits sold individually
Gate: Not included (sold separately)
How To
- Remove any existing clamp ring from the compatible Josam 21500-series drain body.
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Clean the drain flange and ensure the membrane or flashing is positioned correctly.
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Place the 21504 Cast Iron Clamp Ring over the drain body, aligning the bolt holes with the body’s bolt pattern.
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Secure the ring using the appropriate bolts or fasteners per manufacturer instructions, ensuring uniform compression of the flashing.
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Inspect the installation to verify that the ring is evenly seated and the membrane is sealed securely.
FAQs
Q: What is the outside diameter of the 21504 Cast Iron Clamp Ring?
A: The outside diameter is 13-3/4 inches.
Q: What are the bolt-to-bolt measurements for this ring?
A: The 21504 ring has a 10-3/4 inch 180° bolt-to-bolt diameter and a 7-1/2 inch bolt-to-bolt spacing.
Q: Does this ring include the drain dome or drain body?
A: No. The 21504 Cast Iron Clamp Ring is sold as an individual component and does not include the dome or drain body.
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