Watts RD-200-SO Side Outlet Roof Drain - Engineering Specification

RD-200-SO Side Outlet Roof Drain

Engineering Specification

Model: ES-WD-RD-200-SO

Product Overview

The Watts RD-200-SO is an epoxy-coated cast iron side outlet roof drain. It is equipped with a flashing clamp featuring an integral gravel stop and a standard self-locking polyethylene dome. The drain is designed with a no hub outlet for secure connection.

For technical assistance, please contact Watts customer service.

Project Information Fields

The following fields are provided for project documentation and specification tracking:

  • Job Name: _________________________
  • Job Location: _________________________
  • Engineer: _________________________
  • Approval: _________________________
  • Contractor: _________________________
  • Contractor's P.O. No.: _________________________
  • Representative: _________________________

Pipe Sizing Options

SuffixDescription
22"(51) Pipe Size
33"(76) Pipe Size
44"(102) Pipe Size

Drain Component Options

SuffixDescription
-13Galvanized Body & Clamp
-BSump Receiver
-GSSStainless Steel Ballast Guard
-KDuctile Iron Dome
-K13Galvanized Dome
-K80Aluminum Dome
-K81Rough Bronze Dome
-K83SS Mesh Covered Dome
-LVandal Proof Dome
-R2" External Water Dam
-WAdj. Internal Water Dam

Product Dimensions and Diagram Description

The RD-200-SO Side Outlet Roof Drain features a cast iron body with a side outlet elbow and a domed strainer. The strainer is black and has a grid pattern for drainage, with an integrated gravel stop around its base.

A technical drawing illustrates the product's dimensions. Key measurements are:

  • Overall height of the dome: 9 1/4 inches (235 mm)
  • Height of the dome from the mounting flange: 5 5/16 inches (135 mm)
  • Height of the body from the mounting flange: 5 3/4 inches (146 mm)
  • Width from the mounting flange to the center of the side outlet: 4 1/16 inches (103 mm)
  • Overall width of the unit: 8 5/8 inches (219 mm)
  • The width of the outlet connection itself is 4 9/16 inches (116 mm)
  • Dimension 'A', representing the height of the outlet connection, varies by pipe size and is detailed in Chart A.
  • The required deck opening is 6 1/2 inches (165 mm), and the sump receiver size is 8 inches (203 mm).
  • The free area for drainage is 35 square inches.

Chart A: Pipe Size vs. Dimension A

Pipe SizeA
2"(51)4 5/8"(117)
3"(76)4 3/32"(104)
4"(102)3 5/8"(92)

Important Notice

The information contained herein is not intended to replace the full product installation and safety information available or the experience of a trained product installer. You are required to thoroughly read all installation instructions and product safety information before beginning the installation of this product.

General Information and Contact

Watts product specifications in U.S. customary units and metric are approximate and provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

Contact Information

  • USA: T: (800) 338-2581 ? Watts.com ?
  • Canada: T: (888) 208-8927 ? Watts.ca ?
  • Latin America: T: (52) 55-4122-0138 ? Watts.com ?

Document Reference: ES-WD-RD-200-SO 2536

© 2025 Watts

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