How to Guide

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systems within the walls of a building, so this application
is not code compliant and therefore excluded under the
Charlotte Pipe and Foundry limited warranty. Second, these
parts are produced to conform to ASTM D 2466 for pressure
piping applications, and are not designed to be part of a test
apparatus for repeated and temporary installation and testing
of domestic water systems. If not installed correctly and
properly tightened, system or property damage could result.
For this application galvanized malleable iron threaded caps
would be recommended.
Do’s and Don’ts For Threaded
Connections
Do’s
• Avoid female plastic pipe threads whenever possible.
• CPVC plastic threaded male adapters are recommended
for cold water applications only.
• CPVC brass threaded transition fittings are recommended
for hot and cold water applications. Brass threaded
transition fittings are manufactured from low lead
brass and are available in male, female and drop ear ell
configurations.
• Only join to threaded components conforming to ANSI/
ASME B 1.20.1 or ASTM F 1498.
• De-rate plastic threaded fittings an additional 50%
beyond the pressure rating for pipe and fittings.
• Use Teflon tape for thread sealant.
• Tighten threaded connections using a strap wrench only.
• Tighten threaded connections a maximum of two turns
past finger tight.
• Make threaded plastic fitting connections in conformance
to ASTM F 1498
Don’ts
• Use pneumatic tools for tightening.
• Never clamp female brass threaded transition fittings in
a vise.
• Never apply more than light pressure on male brass or
CPVC threaded fittings when clamping in a vise.
• Never tighten threaded fittings using common wrenches
or tools designed for metallic piping systems.
• Never tighten threaded connections more than two turns
past finger tight.
• Never use ABS, PVC or CPVC threaded caps as part of
an assembly to test a domestic water system.
INSTALLATION PROCEDURES