Zurn Z100-W3 Roof Drain Water Level Regulator

Dimensional data is subject to manufacturing tolerances and change without notice.



Pipe Size
(in.) (A)
Weight (lbs.)
Dome Open
Area (sq. in.)
2 - 4 28 103
5, 6 29 103
8 30 103

ENGINEERING SPECS: Zurn Z100-W3 roof drain includes a dura-coated cast iron (DCCI) body with combination membrane flashing clamp / gravel guard with 3-in. water level regulator and low-silhouette poly-dome.


Outlet Types

Outlet Type Available Pipe
Sizes (in.)
Body Height
Dimension (E)
Inside Caulk (IC) 2 - 6, 8 5 1/4 in.
Threaded (IP) 2 - 6, 8 3 3/4 in.
No-Hub (NH) 2 - 6, 8 5 1/4 in.
Neo-Loc (NL) 2 - 4 4 5/8 in.



Dome Options

Poly-Dome* with DCCI Body (Z)
6 3/4 In. High Aluminum Dome with DCCI Body (ZA)
Cast Iron Dome with DCCI Body (ZC)
Plain Bronze Dome with DCCI Body (ZRB)

*Regularly furnished unless otherwise specified



Available Accessories

Angular Underdeck Clamp (-AC) Galvanized Cast Iron (-G)
Acid Resistant Epoxy Coated (-AR) Galvanized Cast Iron Dome (ZC only) (-GD)
Bronze Mesh Screen Over Dome (-BS) Roof Sump Receiver (-R)
Underdeck Clamp (-C)  Secondary Clamping Collar (-SC)
Static Extension (1 - 4-in.; specify height) (-E) Stainless Steel Mesh Screen Over Dome (-SS)
Adjustable Extension Assembly (1 3/4 - 3 1/2 in.) (-EA) Vandal-Proof Secured Top (-VP)
Static Extension with Secondary Clamp Collar at Body (-ES) Vertical Expansion Joint (See Z-190) (-XJ)