Installation Guide

108
Plastics Technical Manual
Closed-Loop Systems
A closed-loop plumbing system is one in which water from the
premises side of the water meter is unable to backflow into the
main. This circumstance is becoming more and more prevalent
as the result of the growing use of devices such as backflow
preventers and pressure-reducing valves.
Allowancemustbemadefor“thermalexpansionofthewater.”
Backflow-prevention devices with built-in bypass capabilities,
auxiliary pressure-relief valves or bladder-type expansion tanks
are several options available to help resolve the problem and
to insure long-term system performance.
Do not rely on an expansion tank to handle thermal expansion
of the piping system. Expansion tanks accommodate expansion
of the fluid, not longitudinal expansion of the pipe. The pip-
ing system must be designed to allow for thermal expansion.
Piping systems differ in chemical resistance. Pipe or fittings
may be damaged by contact with products containing
incompatible chemicals resulting in property damage.
• Verify that paints, thread sealants, lubricants, plasticized
PVC products, foam insulations, caulks, leak detectors,
insecticides, termiticides, antifreeze solutions, pipe
sleeve, firestop materials or other materials are
chemically compatible with ABS, PVC or CPVC.
• Do not use edible oils such as Crisco
®
for lubricant.
• Read and follow chemical manufacturer’s literature
before using with piping materials.
• Confirm compatibility of pipe marking adhesive tape
with the manufacturer of the tape to ensure chemical
compatibility with CPVC pipe and fittings.
Connecting CTS CPVC to
Fixtures or Other Materials
Stub-outs for Plumbing Fixtures
CTS CPVC pipe can be used for stub-outs for lavatories,
closets and sinks.
Brass Compression Ferrules
CTS CPVC pipe can be used with standard brass ferrules to
make compression connections where the operating tempera-
turewillnotexceed140°F.TheO.D.ofcoppertubesize(CTS)
CPVCpipeisidenticaltothatofcopper.Werecommendthat
Teflon (PTFE) tape be applied over the ferrule to allow for the
dissimilar thermal expansion and contraction characteristics
of the metal ferrule and the plastic pipe that could possibly
result in a drip leak over a period of time. NOTICE: Do not
over-torque the compression connection as over-torquing may
resultinacrackedpipe.Non-metallicornylonferrulesare
not recommended.
SUPPLEMENTAL INFORMATION
FlowGuard Gold
®
and Corzan
®
Domestic Water Systems
Do’s and Don’ts
While not a complete list, the following is intended to
highlight many of the Do’s and Don’ts when installing a
FlowGuardGoldandCorzandomesticwatersystem.
Do’s
• Do install CPVC Schedule 80 domestic water systems
using IPS P-70 or Oatey Industrial Grade primers.
• Do install CPVC Schedule 80 domestic water systems
usingIPS714orOateyCPVCHeavyDutyOrangesolvent
cements.
• Installationshouldbeinaccordancewithnormalindustry
standards, good plumbing practices, applicable plumbing
codes, building codes and other regulations.
• Followrecommendedsafeworkpractices.
• Followpropermaterialhandlingprocedures.
• Keeppipeandttingsinoriginalpackaginguntilneeded.
• Cover pipe and ttings with opaque tarp when stored
outdoors.
• Makecertainthatthreadsealants,gasketlubricantsand
firestop materials are compatible with CPVC pipe and
fittings.
• Useonlylatexpaintifpaintingisdesired.
• Usetoolsdesignedforplasticpipeandttings.
• Cutpipesquare.
• Deburrandbevelpipebeforesolventcementing.
• Applyprimerandcementwithanapplicatorthatisone
halfthesizeofthepipe’sdiameter.
• Rotatepipe
1
⁄4 to
1
⁄2 turn as the pipe is being inserted into
the fitting socket.
• Avoidpuddlingofsolventcementinttingorpipe.
• Follow recommended cure time for the required pipe
diameter and temperature.
• Align all piping system components properly without
strain. Do not bend or pull pipe into position after being
solvent welded.
• Filllinesslowlyandbleedalltrappedairfromthesystem
prior to conducting a hydrostatic test.
• Visuallyinspectalljointsforpropercementing.