Engineering Specifications

FD-4080OF series of roof drain with Over Flow consist of a large sump cast iron body with bottom outlet, a removable Cast Iron or Nickel Bronze dome strainer, and integral combined Standpipe type water dam and waterproofing membrane non-puncturing clamp

Outlet Type Bottom Outlet
Outlet Connection No Hub or Inside Gasket
Outlet Size 3 & 4 & 6
Strainer Free Area 830 cm2

For more details on "Data Sheet" download pdf

FD-4080OF Data Sheet and FD-4080OF-NB Data Sheet

Area of Application

Used in flat roofs of any construction where a constant height of water is required. Also used as a Secondary Drain (emergency overflow), draining water when the depth of the water on the roof exceeds the standpipe type water dam height. This Drain can be used near to main (Primary) drain. The dome provides sufficient free area for quick drainage of rain water and protects the drain sump and connected piping from the intrusion of debris. The Flashing (V-Shape) clamp holds flashing and roofing materials to the drain body without puncturing.

For more details on "Installation Drawing" download pdf

FD-4080OF Installation Drawing