Josam 21500-19 Large Sump With Perforated Stainless Steel Gravel Guard

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

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)