Josam 21500-19: Large Sump with Perforated Stainless Steel Gravelguard
Dimensional data is subject to manufacturing tolerances and change without notice.
Download Specifications PDF
| Type No. | Pipe Size (in.) | Weight (lbs.) |
| 21502-19 | 2 | 36 |
| 21503-19 | 3 | 37 |
| 21504-19 | 4 | 38 |
| 21505-19 | 5 | 39 |
| 21506-19 | 6 | 40 |
| 21508-19 | 8 | 42 |
| 21509-19-Z | 10 (no-hub only) |
43 |
Specifications: The Josam 21500-19 Series is a coated cast-iron roof drain with a large polypropylene locking dome. Includes a WEJLOC® non-puncturing clamp ring with integral gravel stop, stainless steel perforated gravel guard, and large sump with a wide roof flange and bottom outlet.
Application: Used on flat roofs where gravel ballast is employed to anchor a membrane. 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. A perforated stainless steel gravelguard restrains gravel ballast from entering the dome and drain sump.
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) |
