
RD-200-W 
Overflow Roof Drain 
with 4" Internal Water Dam 
Tag: 
SPECIFICATION: Watts Drainage RD-200-W epoxy coated cast iron overflow roof drain with flashing clamp with integral 
4" (102) high internal standpipe, self-locking polyethylene dome, and no hub (standard) outlet. 
5-1/4" (133) 
Pipe 
Size 
2"(51) 
3"(76) 
4"(102) 
4" (102) 
Standard 
CHART B 
Chart B 
Std.   P  T 
No 
Hub 
3-5/8"(92) 
3-5/8"(92) 
3-5/8"(92) 
Push 
On  Thread 
4-1/4"(108) 
4-1/4"(108) 
4-1/4"(108) 
Female 
4-1/4"(108) 
4-1/4"(108) 
4-1/4"(108) 
X 
Inside 
Caulk 
4-1/4"(108) 
4-1/4"(108) 
4-1/4"(108) 
8-3/8" (213) 
PIPE SIZE 
8-1/8" (206) 
60/61 
PVC/ 
ABS 
3-3/4"(95) 
3-5/8”(92) 
3-7/8”(94) 
Free Area 
Sq. In. 
35 
Components
B3 
B3-DM  FC-2 
B3-W 
Pipe Sizing (Select One)
Suffix      Description 
2"(51) Pipe Size 
2 
3"(76) Pipe Size  3 
4"(102) Pipe Size  4 
Outlet Type (Select One) 
Suffix      Description 
No Hub (MJ) 
 NH 
Push On  P 
Threaded Outlet  T 
Inside Caulk X 
Options (Select One or More)
Suffix      Description 
-13 Galvanized Body & Flashing 
Clamp
-B Sump Receiver
-D Underdeck Clamp
-F Adjustable Extension Flange
-GSS Stainless Steel Ballast Guard
-K Ductile Iron Dome
-K80 Aluminum Dome
-K81 Rough Bronze Dome
-K83 SS Mesh Covered
Aluminum Dome
-L
Vandal Proof Dome
-SO
Side Outlet
-US Buy American Compliant 
Optional Body Material
Suffix      Description
PVC Body w/Socket Outlet-60 
ABS Body w/Socket Outlet-61
Deck opening 6-1/2"(165) 
with sump receiver 8"(203)
** Side Outlet (-SO) option only available in 2"(51), 3"(76), 4"(102) pipe sizes. 
  Underdeck Clamp (-D options) are not available when -SO is selected. 
ES-WD-RD-200-W USA 1334 RD-200-W