 To the
left are
the
components
that
create
the
underground
line
that
supplies
propane
gas to
your
home or
business.
The
yellow
pipe is
Polyethylene
Pipe.
The
common
size is
1/2 inch
inside
diameter.
It is
flexible
and does
not need
to be
buried
using
any
special
material.
Polyethylene
Pipe is
for
underground
use
only.
The Gray
pipes
are
Risers
used to
come out
the
ground
at the
tank and
the
building.
These
connect
to the
polyethylene
underground.
The red
disk is
a High
Pressure
Regulator,
this
takes
the
pressure
in the
tank and
lowers
it to 10
Lbs for
delivery
through
the
polyethylene.
The
green
Regulators
are the
Low
Pressure
Regulators,
these
lower
the
pressure
once
again
from 10
Lbs in
the
underground
line to
1/2 Lb
for
delivery
to the
appliances. |
Corrugated
Stainless
Steel
Tubing,
or CSST,
seen at
right,
is used
for
interior
piping.
This
Type of
pipe is
far
superior
to iron
piping. CSST can
be bent
and
shaped
around
corners,
and does
not need
to be
passed
through
wall
studs in
a
straight
line.
CSST
uses
special
fittings,
the
black
disk is
a
termination,
these
are at
every
end of
CSST, on
the
outside
of the
building
and at
every
appliance.
The T
fitting
is just
that, a
T, used
to take
the CSST
in two
directions.
The last
fitting
is a
Pipe To
Flex
used to
go from
CSST to
iron
pipe
when
necessary. |
 Pictured
here are
various
lengths
of Iron
Pipe.
With the
pipe are
the
common
fittings.
The most
common
size
used for
propane
gas is
3/4 inch
inside
diameter.
In the
center
of the
picture
are ball
valves.
The
yellow
handle
is a
Main
Shutoff
used
outside
the
building
to
shutoff
the gas
flow.
The red
handled
valve is
an
Appliance
Shutoff
used to
stop the
flow of
gas to
individual
appliances.
Every
appliance
must
have a
shutoff.
Shutoffs
are
required
by
Arizona
codes.
The
final
fitting
is
Dielectric
Union,
it is
insulated
to stop
the flow
of
electricity
should a
lightning
strike
occur or
something
similar.
This
fitting
is
required
by
Arizona
building
codes. |