Watts RD-300 Instructions D'installation page 4

Commonly Specified Options
-13 Galvanized body and flashing clamp
Standard zinc galvanizing, typically specified in coastal environments.
-85 4" High Perforated SS Extension
For IRMA roof applications, allows drainage through insulation area.
-B Sump Receiver
Receives roof drain flange for installation flush with the roof deck, eliminating stress
on the roofing membrane, and potential puddling around the drain.
-D Underdeck Clamp
Install on the underside of the roof deck, securely fastens the roof drain to the deck.
-F Deck Flange / Adjustable Extension
10 ga. zinc plated steel flange creates a structurally sound mounting surface over
the roof penetration, and enables drain to be elevated to insulation height.
Note: a separate sump receiver is not required when the drain is specified with a -F Deck Flange
/ Adjustable Extension.
-GSS Stainless Steel Ballast Guard
4" high perforated stainless steel, protects drain area and dome in ballasted roof
areas.
-K Ductile Iron Dome
Superior impact resistance compared to standard cast iron. Finished with standard
grey epoxy coating.
-K13 Galvanized Ductile Iron Dome
Hot-dipped galvanized, superior impact resistance. Typically specified in coastal
environments.
-K40 Ductile Iron Low Dome
Low profile, superior impact resistance compared to standard cast iron. Finished
with standard grey epoxy coating.
-K80 Aluminum Dome
Corrosion resistant, finished with standard grey epoxy coating.
-K83 Stainless Steel Mesh Covered Aluminum Dome
Corrosion resistant, mesh prevents small debris from entering the drain.
-L Vandal Proof Dome
Dome secured with Allen head bolts.
-R 2" High External Water Dam
For emergency roof overflow drains, restricts drainage on roof surface below 2".
-US Buy American Compliant
Product will be supplied with minimum 51% domestic content, in compliance with
FAR 52.225-9 Buy American Act.
-W 4" High Internal Water Dam
For emergency roof overflow drains, restricts drainage on roof surface below 4".
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