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Overflow Drain - Water Dam Type
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Overflow Drain - Water Dam Type

Figure Number:  1080
Water Dam Type
Product Function:
Used in flat roofs of any construction where a constant height of water is desired on the roof. It may also be used as an emergency overflow for conventional roofs, draining rain water when the depth of the water on the roof reaches the water dam height.

Regularly Furnished:
Duco Cast Iron Body, Flashing Clamp and Gravel Stop with Polyethylene Dome, and Cast Iron Water Dam.
Related Figure Numbers
  • DX1080 - With Wide Flange Body
  • 1045-RDP -

    With Top Mount Roof Deck Plate

  • 1080-RDP -

    Water Dam Type

NameDescriptionFile Size
Specifications US Govt ComplianceItems complying with U.S. government specifications34 KBDownload
CSI Specifications for Roof DrainsCSI Specifications for Roof Drains230 KB
OVERFLOW ROOF DRAIN - POURED CONCRETE DECK

Smith No. 1080 cast iron body with 2” high water dam and polyethylene dome.


OVERFLOW ROOF DRAIN- ANY INSULATEDWOOD, GYPSUM, CONCRETE POURED OR PRE-CAST DECK

Smith No. 1080 (-E-R-C) cast iron body with 2” high water dam extension sleeve for insulation, underdeck clamp, sump receiver and polyethylene dome.


OVERFLOW ROOF DRAIN-WOOD OR PRECAST CONCRETE DECK

Smith No. 1080 (-R-C) cast iron body with 2” high water dam, underdeck clamp, sump receiver and polyethylene dome. See manufacturer’s catalog for recommended deck opening.

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

Variations

  • Adjustable Extension (Specify Fig. 1045)
  • Expansion Joint (Specify Fig. 1710)
  • Extension -E - (Specify Height)
  • L-Shaped Underdeck Clamp -CL
  • L Speedi-Set® Service Weight - 02(50), 03(75), 04"(100) Sizes Only
  • LXH Speedi-Set® Extra Heavy.
  • Secondary Flashing Clamp -C2
  • Sump Receiver -R
  • Underdeck Clamp -C
  • Vandal Proof - Dome - U
  • T Threaded Outlet
  • 2 1/2(64), 3(75), 4"(100) Water Dams Available -WD