Install Instructions
Viega IM-MTL 0612
724607
34
Designers and installers should be
specific with size designations in
their references and when ordering.
Copper and copper alloy tube should
not be used if the gas contains more
than an average of 0.3 grains of
hydrogen sulfide per 100 standard
cubic feet (scf) of gas (0.7 mg/100 L).
Today, federal regulations limit the
amount of hydrogen sulfide allowed
in natural gas transmission. The
allowable limits are below those
specified in the model codes and
below the amounts that would
adversly affect copper tubing. Copper
tubing can be installed in all areas of
construction, including
concealed spaces.
For underground applications, copper
tubing can be installed below ground,
as
ProPressG and copper tubing is
approved for underground installations.
However, any installations must meet all
state and local codes, including those
for underground. Proper authorization
must be obtained prior to underground
installation.
ProPressG and copper
tubing may be installed outside
without any additional corrosion
protection.
In residential applications, copper
tubing with ProPressG fittings can
be used to run fuel gas from the
meter or source, to furnaces, boilers,
gas ranges, water heaters, gas
fireplaces, clothes dryers, outdoor
barbecues and decorative lighting.
Copper tubing is available in long
lengths, reducing the number of
fittings required.
Copper tubing can be easily installed
in wall and floor cavities. When
retrofitting an installation in a home,
copper tubing using ProPressG
fittings is easier, faster and less
expensive than installing threaded
steel pipe or CSST.
For commercial construction, copper
tubing using ProPressG fittings
may be installed for gas lines to air
handling units, boilers, water heaters
and other appliances. For rooftop
installations, copper tubing with
ProPressG fittings can be installed
either on or below the roof. When
installed on the roof, the copper
tubing does not have to be coated
or covered since the material is
corrosion resistant.
15.4 Pressing Process
Overview
The Smart Connect Feature
The Smart Connect feature is a
special indentation in the inside
surface of the fitting near the
sealing element. This indentation
assures identification of leakage of
liquids and/or gases from inside the
system past the sealing element
of an unpressed connection. The
indentation is removed during the
pressing process creating a
leak-proof, permanent connection.
This feature provides quick and
easy identification of connections
that have not been pressed prior to
putting the system into operation.
Unpressed connections are located
by pressurizing the tubing system
with a maximum pressure range of
Tube
Type
Color
Code
Standard
Typical
Application
Nominal or
Standard Sizes
Drawn Annealed
Type K Green ASTM B 88
Potable Water,
HVAC, Solar
Systems, Chilled
Water, Fire
Sprinkler,
Compressed Air,
Natural Gas, LP
Gas, Fuel Oil
Straight Lengths
1/2" to 2" 20 ft. 20 ft.
Coils
1/2" to 1"
60 ft.
100 ft.
1-1/4" to 1-1/2" 60 ft.
2"
40 ft.
45 ft.
Type L Blue ASTM B 88
Potable Water,
HVAC, Solar
Systems, Chilled
Water, Fire
Sprinkler,
Compressed Air,
Natural Gas, LP
Gas, Fuel Oil
Straight Lengths
1/2" to 2" 20 ft. 20 ft.
Coils
1/2" to 1"
60 ft.
100 ft.
1-1/4" to 1-1/2" 60 ft.
2"
40 ft.
45 ft.
Type M* Red ASTM B 88
Potable Water,
HVAC, Solar
Systems, Chilled
Water, Fire
Sprinkler,
Compressed Air,
Fuel Oil
Straight Lengths
1/2" to 2" 20 ft. 20 ft.
Coils
1/2" to 1"
60 ft.
100 ft.
1-1/4" to 1-1/2" 60 ft.
2"
40 ft.
45 ft.
*Type M copper tubing may be installed in fuel oil systems but is commonly not
allowed for natural and liquid propane gas systems. Consult local codes prior to the
installation of ProPressG fittings.
Table 15.3: Technical data and product range
Nominal
or
Standard
Size
Nominal
OD
Nominal Wall
Thickness
Type K Type L
1/2" 0.625 0.049 0.040
3/4" 0.875 0.065 0.045
1" 1.125 0.065 0.050
1-1/4" 1.375 0.065 0.055
1-1/2" 1.625 0.072 0.060
2" 2.125 0.083 0.070
Table 15.4: Wall thickness of copper
tubing (ASTM B 88)