Josam 21500-IRMA: Large Sump with Perforated Stainless Steel Extension

Dimensional data is subject to manufacturing tolerances and change without notice. 

Download Specification PDF

 

Type No. Pipe Size (in.) Weight (lbs.)
21502-IRMA 2 39
21503-IRMA 3 40
21504-IRMA 4 41
21505-IRMA 5 42
21506-IRMA 6 43
21508-IRMA 8 45
21509-IRMA-Z 10
(no-hub only)		 46

Specifications: The Josam 21500-IRMA Series is a coated cast-iron roof drain with a large polypropylene locking dome, dome support ring and perforated stainless steel extension filter. Includes a WEJLOC® non-puncturing clamp ring and large sump with a wide roof flange and bottom outlet.

Application: Used on roof systems where an "insulated membrane assembly"—also known as "inverted membrane assembly"—is specified. Insulation is installed on top of a waterproof membrane, and then gravel ballast is applied over the insulation. The drain is furnished with a perforated stainless steel extension made to the specified height of the insulation combined with the depth of the ballast. A large slotted dome ensures maximum free area for quick rainwater drainage while protecting the drain sump and connected piping from debris. Its WEJLOC® compression-flashing clamp holds the membrane or flashing securely to the drain body. 

  

 

Outlet Types

Threaded Outlet (-T)
Inside Caulk Outlet (-X)
Hub Outlet w/ Gasket (2-4 in.) (-Y)
No-Hub Spigot Outlet (-Z)

 

 

Options

Secondary Flashing Clamp (use with -AE only) (-4)