Use and Care Guide

31
surface. Scoring the pipe prior to the actual cut is the
key to making a straight, clean cut. If a piece of pipe
is unusually tough, score it several times before making
the final cut.
5. Rotate the pipe a few degrees within the chain. Then
apply quick final pressure with the handles to complete
the cut.
JOINING METHODS FOR CAST IRON
SOIL PIPE
There are generally three methods for joining cast iron
soil pipe. A compression gasket or caulked joint can be
used to join hub and spigot, while a hubless coupling may
be used to join hubless cast iron.
INSTALLATION PROCEDURES
FOR CAST IRON
Neoprene is well known for its low degree of permanent
deformation (or compression set), even under heavy loading
for long periods of time. Properly compounded neoprene
gaskets not only provide a positive seal, but will retain this
sealing capacity for many years.
Neoprene is one of the few elastomers that is well suited to
direct burial because it will withstand the natural corrosive
components of soil, as well as sanitary effluent.
Although all rubber materials, including neoprene, tend to
stiffen at low temperatures, neoprene gaskets are readily
installed in winter weather. Charlotte
®
compression gaskets
will perform best if kept above 50°F. To make joining
easy in cold conditions, keep gaskets in warm water until
ready to use.
Compression Gaskets
A compression gasket is a molded one-piece gasket made
of an elastomer that meets ASTM C 564. The physical
characteristics of this elastomer help to insure that the
gasket will not decay or deteriorate from contact with
materials carried in the piping system, or from contact
with the soil or air around the pipe.
recommended by Charlotte Pipe
®
are not the responsibility
of this company.
Charlotte Pipe and Foundry Company strongly recommends
that its cast iron hub and spigot pipe and fittings be joined
with compression gaskets sold by our Company. Our hub
and spigot pipe and fittings are manufactured to very
specific manufacturing tolerances which conform to ASTM
A 74. Our gaskets, produced in conformity with ASTM C
564, are especially designed to work with our pipe and
fitting tolerances.
It has been the experience of our Company that gaskets
designed by other manufacturers, even though they may
be manufactured to the same consensus standards, may
give less than satisfactory test and performance results.
Consequently, failures in installations using gaskets not
To reduce the risk of property damage, service
compression gaskets must only be used with service pipe,
while extra heavy compression gaskets must only be used
with extra heavy pipe.
Follow all safety procedures in this manual and use
protective eye wear, clothing and equipment when making
any compression gasket joint to reduce the risk of serious
injury.
• NEVER test with or transport/store
compressed air or gas in Cast Iron pipe
or fittings.
• NEVER test Cast Iron pipe or fittings
with compressed air or gas.
• ONLY use Cast Iron pipe and fittings
for drain, waste and vent or sanitary
sewer applications.
Testing with or use of compressed air or gas in Cast Iron
pipe or fittings can result in explosive failures and cause
severe injury or death.
WARNING: The maximum working temperature for
neoprene gaskets is 212°F, with a maximum working
pressure of (0) zero Psi. Therefore, the Charlotte Seal and
Quick-tite gaskets are not rated for pressure applications.
Joint deflection using a compression gasket has a maximum
limit of up to 5 degrees. Maximum deflection should not
exceed 1/2 inch per foot of pipe. This would allow 5 inches
of deflection for a 10 foot piece of pipe and 2-1/2” for a 5
foot piece of pipe. Installation should initially be completed
in a straight line and then deflected to the appropriate
amount. This helps assure a good tight joint. For more than
5 degrees of deflection, fittings should be used.