Josam 416 - Cast Iron Drain Ring

The Josam 416 Cast Iron Clamp Ring is manufactured from cast iron and is designed for use with Josam 416 roof drains. It features an outside diameter of approximately 15-1/4 inches, a 180° bolt-to-bolt diameter of approximately 12-1/4 inches, and a bolt-to-bolt spacing of approximately 8-1/2 inches. The ring secures the roofing membrane or flashing to the drain body.

Key Features

• Material: cast iron
• Outside diameter: approximately 15-1/4 inches
• 180° bolt-to-bolt diameter: approximately 12-1/4 inches
• Bolt-to-bolt spacing: approximately 8-1/2 inches
• Designed for use with Josam 416 roof drains

Manufacturer: Josam Company

Model/SKU: 416

Material: Cast iron

Outside diameter (lip to lip): approximately 15-1/4 inches 

180° bolt-to-bolt diameter: approximately 12-1/4 inches 

Bolt-to-bolt spacing: approximately 8-1/2 inches 

Quantity: Kits sold individually

Gate: Not included (sold separately)

• Remove any existing clamp ring from the compatible Josam 416 drain body.
• Ensure the drain flange and surrounding membrane or flashing are clean and properly positioned.
• Place the 416 Cast Iron Clamp Ring over the drain body aligning the bolt holes with the drain body’s bolt pattern.
• Secure the ring using appropriate bolts or fasteners per the manufacturer instructions, ensuring the membrane or flashing is clamped evenly.
• Inspect the installation to verify that the ring is seated properly and that the roofing membrane or flashing is secured without gaps or lifting.

Q: What is the outside diameter of the 416 Cast Iron Clamp Ring?
A: The outside diameter is approximately 15-1/4 inches.

Q: What are the bolt-to-bolt dimensions for this ring?
A: The ring’s 180° bolt-to-bolt diameter is approximately 12-1/4 inches and the bolt-to-bolt spacing is approximately 8-1/2 inches.

Q: Does this ring include the drain dome or drain body?
A: No. The 416 Cast Iron Clamp Ring is sold as an individual component and does not include the dome or drain body.