Installation Guide

FV669 Rev. B 10/14/2019
Page 4
STEP 3.1
Prior to attaching ush valve to control stop(A) inspect and verify
that the O-ring (C) is located within the O-ring groove at the tailpiece.
Ensure the locking nut (D) and locking snap ring (E) are also present
on the tailpiece. See Figure 7.
STEP 3.2
Lubricate O-ring with water and carefully insert ush valve tailpiece
into the control stop valve to ensure O-ring remains seated. Tighten
locking nut using a smooth jawed wrench. See Figure 8.
Flush Valve Installation - STEP 3
STEP 3.3
Determine the length of vacuum breaker tube required to join the
ush valve and xture spud, and cut if necessary. See Figure 9.
Water Closet Urinal
STEP 3.4
Assemble and secure the vacuum breaker tube assembly and spud
nut assembly to the ush valve and xture spud by hand tightening
the spud nut and vacuum breaker tube nut.
Adjust and plumb the valve assembly. Tighten all connections with
smooth jawed wrench and turn on water supply at the control stop.
See Figure 9.
DO NOT use pipe sealant or plumbing grease on any valve
component or coupling with the exception of the Control Stop
Inlet! Ensure Vacuum Breaker does not twist or warp when
tightening Vacuum Breaker Tube Nut.
DO NOT cut vacuum breaker tube shorter than 6” below
the -C-L- indicator mark, as vacuum breaker must be 6” above
the xture. Consult plumbing Codes & Regulations for specic
details.
B
A
E
C
D
A
B
D
Figure 7 Figure 8
Figure 9