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.

Smith® Overflow Drain, Water Dam, Series: 1080, 4 in Outlet, No-Hub Connection, Cast Iron Drain, 15-1/4 in Dia Dimensions

• CID: cast iron dome
• Draining rain water when the depth of the water on the roof reaches the water dam height
• 102.5 sq-in free area
• Note: stated flow rates for roof drains are based on particular test piping configurations and dimensions
• Installed roof drain flow rates cannot be stated unless the attached piping configuration is known and the effects of the drainage calculated
• 08(200) & 10(250) outlet sizes are regularly furnished with a 20(510) Dia flange see back sheet. for 16(405) Dia flange it must be specified as -16. Ex: 1010Y08-16

• Line Drawing https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/Jay_R_Smith_1011Y03-C_Line_Drawing.pdf
• Specification Sheet https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/Smith_1080C02_Specification_Sheet.pdf
• Warranty Information https://www.hirsch.com//ASSETS/DOCUMENTS/ITEMS/EN/Jay_R_Smith_76289-91-6_Warranty.pdf