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Indoor plumbing has been around for a long time, and the
materials used for the pipes have gone through many changes.
For decades, metal and ceramic were the most common pipe
materials. Many homes today still have galvanized steel,
clay, or even cast iron piping. Starting in the 1970s, copper
replaced galvanized steel and is today the most common metal
used in plumbing systems.
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<a href="http://www.ifanplast.com/plastic-pipe/"
target="_self">Plastic pipe</a>s, however, have an important
part in plumbing. Various types of plastic water and sewage
pipes are easier to work with when compared to copper. The
first use of plastic pipes was in the 1930s, and with the
1960s they rose in popularity among plumbers thanks to
advances in plastic manufacturing that made these pipes more
useful in general.
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There's no single type of plastic used to manufacture
pipes. For years, a gray plastic called polybutylene was
common for plumbing systems, but it's no longer used
because it splits and creates leaks. If you have old
polybutylene pipes in your house, we strongly recommend you
arrange to have it replaced with a newer type of plastic
pipe. Here are the three types of plastic water pipes that
are commonly used by plumbers today:
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POLYVINYL CHLORIDE (PVC Pipe)
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This is the material you're probably most familiar
with, and it serves a number of roles in a household aside
from in the plumbing. Most main water lines are made of PVC.
It's not as flexible as some other types of plastic, and
because it warps at high temperatures (hotter than 140°F) it
isn't used for hot water lines or in kitchen
applications. This type of plastic water pipe will not
corrode and features a low heat conductivity.
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CHLORINATED POLYVINYL CHLORIDE (<a
href="http://www.ifanplast.com/plastic-pipe/cpvc-pipe/"
target="_self">CPVC Pipe</a>)
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This is PVC piping that's gone through chlorination
(treatment with chlorine). CPVC is more durable at higher
temperatures and pressures than PVC and is common in
industrial plumbing. For homes, it's great for carrying
drinking water and handling the hot water lines for which PVC
is unsuited. CPVC is more flexible as well. However, it
cracks if it freezes, so CPVC isn't useful for water
mains because those pipes must be buried in the ground.
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CROSS-LINKED POLYETHYLENE (<a
href="http://www.ifanplast.com/plastic-pipe/pex-pipe/"
target="_self">PEX Pipe</a>)
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Plumbers often use PEX in home plumbing systems thanks to
its many advantages. This type of plastic water pipe is
useful for both hot and cold water applications, and is the
favorite pipe found carrying freshwater in kitchens and
bathrooms. PEX is very flexible, so it fits into most spaces
and is inexpensive and easy to work with. It comes in
different colors, making it easy for plumbers to identify hot
and cold lines for future work. They do need to have support,
however, because of their flexibility.
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Except for the three types above, there are other types
of pipes with different materials such as <a
href="http://www.ifanplast.com/plastic-pipe/ppr-pipe/"
target="_self">PPR Pipe</a>, <a
href="http://www.ifanplast.com/plastic-pipe/hdpe-pipe/"
target="_self">HDPE Pipe</a>, <a
href="http://www.ifanplast.com/plastic-pipe/pph-pipe/"
target="_self">PPH Pipe</a>, etc.
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A professional plumber knows the right types of pipes,
whether metal or plastic, to use for water line repairs,
replacements, and upgrades. Also, the pipes need Pipe
fittings to connect the pipes together and allow you to
customize your plumbing to suit your needs. There are lots of
different kinds of <a
href="http://www.ifanplast.com/plastic-fitting/"
target="_self">Plastic Fitting</a>s with multiple different
purposes, such as the drainage of rainwater. Plastic Fitting
can be devided into different types as well, such as <a
href="http://www.ifanplast.com/plastic-fitting/ppr-fitting/"
target="_self">PPR Fitting</a>, <a
href="http://www.ifanplast.com/plastic-fitting/cpvc-fitting/"
target="_self">CPVC Fitting</a>, <a
href="http://www.ifanplast.com/plastic-fitting/hdpe-fitting/"
target="_self">HDPE Fitting</a> and so on.
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