Raintrol® Roof Drain with Adjustable Flow Rate Control and Adjustable Top for Sloped Roof Design

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Raintrol® Roof Drain with Adjustable Flow Rate Control and Adjustable Top for Sloped Roof Design

Figure Number:  1083-1088
Product Function:
Used to control the flow of rain water off a roof. Trapezoidal weirs limit the flow to the leader. Adjustable to provide various flow rates as required.

Green Building Feature:
  • Raintrol Roof Drains help to not overwhelm old sewer systems. As a value engineering concept, smaller piping can be used because the installation of Raintrol Roof Drains control the flow of the water from the roof.

Regularly Furnished:
Duco Cast Iron Body with Combined Flashing Clamp and Gravel Stop with Adjustable "Flow Rate Control" Assembly and Polyethylene Dome.
Product Details
  • Product Type:  Roof Drain
Related Figure Numbers
  • 1083-AE - With Adjustable Extension
  • 1088 - With Side Outlet
  • 1088-AE - With Side Outlet and Adjustable Extension
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NameDescriptionFile Size
Specifications US Govt ComplianceItems complying with U.S. government specifications34 KBDownload
CSI Specifications for Roof DrainsCSI Specifications for Roof Drains230 KB

Smith No. 1083 cast iron body with flashing clamp, polyethylene dome. Trapezoidal weirs limit flow to leaders. Sizing and placement in accordance with Smith Raintrol.

NameDescriptionFile Size
Parts Order Guide for Roof DrainsParts Order Guide for Roof Drains632 KBView

Optional Materials

  • Aluminum Dome -AD
  • Cast Iron Dome -CID
  • Galvanized Cast Iron -G - Body & Collar
  • Galvanized Cast Iron Dome -CIDG
  • Rough Bronze Dome -RBD


  • Expansion Joint (Specify Fig. 1710) - (Fig. 1083 Only)
  • Extension -E - (Specify Height)
  • L-Shaped Underdeck Clamp -CL
  • L Speedi-Set® Service Weight - 02(50), 03(75), 04"(100) Sizes Only (Fig. 1083 Only)
  • LXH Speedi-Set® Extra Heavy - 02(50), 03(75), 04"(100) Sizes Only (Fig.1083 Only)
  • NO-HUB Adaptor - Fig. 1088 Only (Specify Fig. 2646Y)
  • Non-Adjustable Flow Rate Control Assembly
  • Secondary Flashing Clamp -C2
  • Sump Receiver -R
  • Underdeck Clamp -C
  • Vandal Proof - Dome - U
  • T Threaded Outlet