IM-PP 724607 0815
12
3.1
Tube selection
3.1.1 Viega ProPress
Viega ProPress copper and copper alloy fittings are
compatible with ½" to 1¼" soft copper tube and
½" to 4" hard copper tubing types K, L and M.
All copper tubing that is to be used with Viega
ProPress copper and bronze fittings must comply
with ASTM B88 standards.
Note:
Tubing shall be free of surface imperfections
including metal stamped print lines.
3.1.2 Viega ProPressG
Viega ProPressG fuel gas installations can be
made with seamless, drawn copper tubing. These
tubes must comply with the requirements of
ASTM B88.
Types K and L copper tube (ASTM B88) have been
used in fuel gas systems for many years. Type L is
typically used for interior distribution systems and
type K for any underground lines.
Designers and installers should be specific with
size designations in their references and when
ordering. Copper tubing 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 adversely affect
copper tubing. Copper tubing can be installed in all
areas of construction, including concealed spaces.
Viega 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 from the local Authority
Having Jurisdiction. Viega ProPressG and copper
tubing may be installed outside without any
additional corrosion protection.
In residential applications, copper tubing with
Viega 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 can be easily installed in wall and
floor cavities. When retrofitting an installation in a
home with copper tubing using Viega ProPressG
fittings is easier, faster and less expensive than
installing threaded steel pipe or CSST.
For commercial construction, copper tubing using
Viega ProPressG fittings may be installed for gas
lines to air handling units, boilers, water heaters
and many other gas appliances. For rooftop
installations, copper tubing with Viega 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 naturally corrosion resistant.
3.1.3 Viega ProPress for Stainless
Only Viega stainless tubing is approved for
installation with Viega ProPress for Stainless
fittings. This is to ensure reliability and conformity
with the stainless steel system. Viega ProPress for
Stainless pipe comes in sizes ½" to 4".
General
Viega ProPress for Stainless tubing is thicker
than schedule 5, inert gas welded pipes,
meeting ASTM A312, A554 and DIN 1988 wall
thickness requirements.
Delivery condition
All dimensions are delivered in sticks that are nominal
20 ft. in length, with a metallic bare exterior and
interior surface. The sticks are free from annealing
color and corrosion-promoting substances.
All tubing has been tested for leaks and is subject
to continuous quality monitoring, as well as external
monitoring by the material testing office.
3 General Installation Instructions
Summary of Contents for Megapress
Page 27: ...IM PP 724607 0815 27 Notes ...
