Watts RD-200-R Overflow Roof Drain Specifications & Accessories

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

Specifications: The Watts Drainage RD-200-R is an epoxy-coated, cast-iron overflow roof drain with flashing clamp. It includes an integral 2-in. high external water dam, self-locking polyethylene dome, and no hub (standard) outlet. 35 sq. in. of free area.



  Outlet Types
Pipe Size (in.) No Hub (std.) Push On Threaded Inside Caulk PVC / ABS
2" 3-5/8" 4-1/4" 4-1/4" 4-1/4" 3-3/4"
3" 3-5/8" 4-1/4" 4-1/4" 4-1/4" 3-5/8"
4" 3-5/8" 4-1/4" 4-1/4" 4-1/4" 3-7/8"


* Side Outlet (-SO) option only available in 2, 3 and 4-in. pipe sizes. Underdeck Clamp (-D) is not available when side outlet is selected.



Outlet Types

No-Hub Outlet (-NH)
Push On (-P)
Threaded Outlet (-T)
Inside Caulk (-X)



Optional Body Material

PVC Body w/ Socket Outlet (-60)
ABS Body w/ Socket Outlet (-61)







Galvanized Body & Flashing Clamp (-13) Rough Bronze Dome (-K81)
Sump Receiver (-B) SS Mesh Covered Aluminum Dome (-K83)
Underdeck Clamp (-D) Vandal Proof Dome (-L)
Adjustable Extension Flange (-F) Side Outlet (-SO)
Stainless Steel Ballast Guard (-GSS) Buy American Compliant (-US)
Ductile Iron Dome (-K) Adjustable Internal Water Dam (-W)
Aluminum Dome (-K80)