Flow Regulating Roof Drain
Flow Regulating Roof DrainFlow Regulating Roof DrainFlow Regulating Roof DrainFlow Regulating Roof Drain

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Flow Regulating Roof Drain

Figure Number:  1055

Regularly Furnished:
Duco Cast Iron Body, Flashing Clamp and Gravel Stop with P.V.C. Standpipe with Flow Control Orifice as Specified and Polyethylene Dome.
Related Figure Numbers
  • 1055C - Caulk Outlet
  • 1055Y - No-Hub Outlet
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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
NameDescriptionFile Size
Parts Order Guide for Roof DrainsParts Order Guide for Roof Drains632 KBView

Optional Materials

  • Bronze Standpipe -BZS
  • Cast Iron Standpipe -CIS
  • Galvanized Cast Iron Body and Collar -G
  • Galvanized Cast Iron Dome -CIDG
  • Cast Iron Dome -CID
  • Aluminum Dome -AD
  • Rough Bronze Dome -RBD


  • Expansion Joint (Specify Fig. 1710)
  • Extension (Specify Height) -E, -E02 2" (51), -E04 4" (100), -E06 6" (150)
  • "L" Shaped Underdeck Clamp -CL
  • L Speedi-Set Service Weight 02(50), 03(75) & 04(100) sizes only
  • LXH Speedi-Set Extra Heavy 02(50), 03(75) & 04(100) sizes only
  • Secondary Flashing Clamp -C2
  • Sump Receiver -R
  • Underdeck Clamp -C
  • Vandal Proof Dome -U
  • T Threaded Outlet