The Watts FD-620 is designed for floating slab installations and environments where slab movement must be managed independently from the drainage system. It features an epoxy-coated cast-iron body with both upper and lower sections, reversible membrane clamps equipped with primary and secondary weepholes for enhanced seepage control, an 8″ diameter adjustable round top with a heel-proof ductile-iron grate, a neoprene movement compensator coupling, and a standard no-hub outlet.

Key Features

• Epoxy-coated cast-iron upper and lower bodies with membrane clamps and dual weepholes to handle perimeter seepage and drainage integrity

• 8″ adjustable round top plate with heel-proof ductile iron grate provides field-level adjustment and traffic-rated durability

• Neoprene movement compensator coupling absorbs slab movement to protect the drain assembly

• Standard no-hub outlet connection, with options for push-on, threaded, or inside-caulk adaptable installations

• Rated for XHD (extra-heavy duty) traffic loads, supporting live loads up to 7,500–10,000 lbs

Downloads:

• Specification Sheet