36
I-800
Cut-In Procedures for System
Modification or Repair
Victaulic FireLock CPVC Sprinkler System Products can be used to make
modifications or repairs to existing systems. Several fitting combinations
can be used to tie into an existing system or to replace a section between
fixed, cut-in points. A socket tee can be used to add onto an existing sys-
tem. For repairing an existing system, a socket coupling can be used in
combination with a union, a grooved coupling adapter, or a flange.
• Review all instructions in the “Installation & Joining Section” section,
starting on page 21, before cutting into an existing system (including
square cutting, deburring, beveling, cleaning, dry-fit checks, etc.). The
minimum cut-in cure times, listed in the table below, must be followed to
ensure proper assembly.
• Depressurize and drain the piping system before performing any modi-
fications or repairs to an existing system.
• System modifications (cut-ins) should be made on the smallest diameter
pipe section that is in close proximity to the area of modification. The
selected section must be capable of properly supplying the system
change.
• Carefully plan and measure the section before cutting into the existing
system. Make sure adequate space is available to ensure full insertion
of pipe into fitting sockets. Make a dry connection to the existing system
to check for proper fit before proceeding with the solvent cementing
procedure.
• All dirt and residual moisture must be removed from all areas that will
receive solvent cement. Vacuum the lines, and wipe dry with a clean,
dry rag. Moisture and dirt will slow curing times and can affect joint
strength.
• Only new cans of approved solvent cement (refer to page 19 for infor-
mation) should be used when making cut-in connections. Verify the
expiration date on the solvent cement can before use.
• Before pressure testing, the cut-in joint must be allowed to cure accord-
ing to the times listed in the following chart.
WARNING
• Depressurize and drain the piping system before performing any modifications or
repairs to an existing system.
Failure to follow this instruction could cause serious personal injury and/or product
damage.
NOTICE
• Allowance must be made for making a
1
/
4
-turn twist when inserting the pipe into the
tee (or other component), especially on 1
1
/
2
inch and larger pipe sizes. This may
require assembly of components in combination with the cut-in tee to create a short
spool piece for final connection using socket unions, flanges, or grooved coupling
adapters.
I-800 2755 Rev_I.fm Page 36 Tuesday, September 13, 2005 8:46 AM
