Roof Drain: Large Sump, Clamp Ring & Poly Dome

Warning Cross Reference for WATTS FD-870 is Josam 21500.
     For best match use: -26-33.

21500 Series coated cast iron Roof Drain, large polypropylene locking dome, WEJLOC non-puncturing clamp ring with integral gravel stop, large sump with wide roof flange and bottom outlet.

Used on roofs of any size and any type of construction. Large slotted dome provides maximum free area for quick drainage of rainwater and protects the sump and connected pipe from debris. WEJLOC compression flashing clamp holds the membrane or flashing securely to the drain body. Include -16 internal water guard option for overflow drain applications.

-AELEVELEZE Adjustable Extension -2Drain Receiver
-AERAdjustable Extension using Threaded Rod/Hdwe -20Galvanized Cast Iron Parts
-AREAcid Resistant Epoxy Coated -21Galvanized Cast Iron Dome Only
-CRClamping Drain Receiver with Hardware -22Cast Iron Dome/Grate
-FGFlat Grate -23Rough Bronze Dome
-IRMAPerforated Stainless Steel Extension -26Aluminum Dome
-LCHLong Clampring Hardware -3Deck Clamp Assembly & Drn Receiver
-ORAdjustable Extension with O-Ring -3CDrain Receiver and Drain Receiver Clips
-Q600Planting Area Drain -33S.S. Mesh Screen Covered Dome
-VPVandal-Proof -4Secondary Flashing Clamp (use with -AE only)
-1Deck Clamp Assembly -6Extra Wide Flange Drain Body, -X Only
-1CPDrain Receiver Clips
-10Fixed Ext Collar, CI (spec. ht.) -TThreaded Outlet
-10-20Fixed Exn Collar, Galv. (spec. hgt.) -XInside Caulk Outlet
-16Internal Waterguard 2"-8" Outlets Only -YHub Outlet w/Gasket, 2"-4"
-172 Inch High Solid Clamping Collar -ZNo-Hub Spigot Outlet
-19Clamp Collar w/SS Perf Gravel Guard -66No-Hub Side Outlet

21502 2 36
21503 3 37
21504 4 38
21505 5 39
21506 6 40
21508 8 42
21509 10 43