TRAPS, PRIMERS, BACKWATER VALVES
ZURN PLUMBING PRODUCTS GROUP
SPECIFICATION DRAINAGE OPERATION, 1801 PITTSBURGH AVENUE, ERIE, PA 16502 PHONE 814/455-0921 FAX: 814/454-7929 WEBSITE: www.zurn.com
Page 10
FLOOR DRAIN INSTALLATION STABILIZER
Assembly Instructions
Step 1
Connect a shielded coupling to the drain body (No-Hub
connection), or insert gasket into drain body (Neo-Loc
connection).
Step 2
Remove the threaded studs from hardware bag (Part Number
66955-312-9) and screw into the tapped bosses on the
underside of the drain body until tight.
Step 3
Screw one flanged nut onto each stud with the flange facing
downward.
Step 4
Insert the studs through the four holes of the plate with the
plate cavity facing downward. Set the drain body at the
required rough-in height and screw the flanged nuts down
until they are flush against the top of the plate.
Step 5
Screw the second flanged nut onto each stud with the
flange facing upward. Tighten both nuts on each stud until
the plate is secured to the studs.
Step 6
Trim the studs down so they are flush with the bottom of the
plate. Set the assembly onto a level surface and check to
ensure that the drain body is level with the plate. The flanged
nuts can be loosened and tightened to allow for any necessary
adjustments. Once leveled, trim any studs that extend beyond
the cavity of the plate.
Step 7
Insert a stub of drainage pipe into the shielded coupling
(No-Hub connection) or gasket (Neo-Loc connection) and
secure. It is important that there be at least 1-1/4" of pipe
protruding through the cavity of the plate in order to make
a connection to the remaining drainage line.
Step 8
Once the assembly is complete and set at the proper
rough-in height, place the assembly in the proper location
prior to concrete pour. The assembly can be nailed down to
the concrete forms by using the nail holes provided on the
rim of the plate.
Step 9
Concrete pour.
Step 10
After the concrete is set and the forms are stripped away,
the result will be a voided area on the underside of the floor
with a stub of pipe protruding through it. Trim off any nails
that are extending beyond the concrete floor. The remaining
drainage line can now be connected to the drain assembly.
Note:
Some localities’ building codes do not allow a shielded
coupling or rubber gasket to be buried in concrete. For applications
such as this, a section of 6" PVC pipe can be used to act as a
barrier to keep concrete from coming in contact with the rubber
materials.
