Engineering Specifications

FD-4160EXOF series of roof drain with Over Flow consist of a deep sump cast iron body with bottom outlet, a removable Cast Iron or Nickel Bronze dome strainer, integral combined Standpipe type water dam and waterproofing membrane clamp with integral gravel stop, and adjustable Extension Sleeve.

Outlet Type Bottom Outlet
Outlet Connection No Hub or Inside Gasket
Outlet Size 2 & 3 & 4 & 6
Strainer Free Area 461 cm2

For more details on "Data Sheet" download pdf

FD-4160EXOF Data Sheet and FD-4160EXOF-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 for limited space installations. The adjustable extension sleeve permits adjustment, easily accommodating different insulation thicknesses. The threading allows smooth perimeter movement and support of the top at any adjusted elevation. 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 clamp holds flashing and roofing materials securely to the drain body.

For more details on "Installation Drawing" download pdf

FD-4160EXOF Installation Drawing - Option 1 and FD-4160EXOF Installation Drawing - Option 2