Install Instructions

Viega IM-MTL 0612
724607
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• Wrapping the connection with a
cold wet rag
• Fabricating solder connections
prior to installing the pressed fitting
making sure the tube has cooled
before installing the fitting
• Applying “spray type" spot freezing
It is particularly important to ensure the
tubing inserted into the ProPress fitting
as well as the ProPress fitting are not
exposed to excessive heat.
7.6 Welding Adjacent to
ProPress Fittings
When welding adjacent to a ProPress
connection, the installer must remain
4" away from the connection to prevent
damage to the sealing element. The
installer should take precautions to
keep the ProPress connection cool
while welding, these include:
• Wrapping the connection with a
cold wet rag
• Protecting the connection with a
weld blanket
• Fabricating weld connections prior
to installing the pressed fitting
making sure the tube has cooled
before installing the fitting
• Consistently applying “spray type"
spot freezing
7.7 Rotating a Pressed Fitting
Once a ProPress fitting has been pressed
it can be rotated (not by hand), but
once rotated more than 5 degrees, the
fitting must be re-pressed to restore the
resistance to rotational movement.
7. PROPRESS COPPER FITTINGS 1/2"- 4"
7.1 Tube Selection
Viega ProPress copper and bronze
fittings are compatible with
1/2" – 1-1/4" soft copper tube and
1/2" – 4" hard copper tubing type K, L,
and M copper tubing. All copper tubing
that is to be used with the ProPress
copper and bronze fittings must comply
with ASTM B88 standards.
7.2 Handling Instructions
ProPress components shall be free from
dirt, debris, or items that may interfere
with the sealing element and the
press connection.
ProPress sealing elements, separator
rings and grip rings are to be visually
inspected prior to installation to ensure
the seal is intact and properly located
within the fitting.
7.3 ProPress to Existing Brazed
Fitting
Minimum clearance requirement when
pressing connections near an existing
brazed connection is 2 pipe diameters.
7.4 ProPress to Existing Solder
Fitting
To ensure proper sealing of both the
soldered and press connections, a
minimum spacing between connections
must be maintained.
Note: ensure there is no residual solder
or other foreign debris on the tubing to
be inserted into the press fitting.
7.5 Soldering or Brazing Near
an Existing ProPress
Fitting
When soldering or brazing near a
ProPress connection, the installer
must remain at least three tube
diameters away from the connection
to prevent damage to the sealing
element.
To ensure proper sealing of the
soldered/brazed joint and the press
connection a minimum distance
between connections must be
maintained.
The installer should take precautions
to keep the ProPress connection cool.
These include:
Tube Dia. Minimum distance inch
1/2" 1/4
3/4" 1/4
1" 7/16
1-1/4" 7/16
1-1/2" 5/8
2" 3/4
2-1/2" 1/4
3" 1/4
4" 1/4
Tube Dia. Minimum distance inch
1/2" 1-1/2
3/4" 2-1/4
1" 3
1-1/4" 3-3/4
1-1/2" 4-1/2
2" 6
2-1/2" 7-1/2
3" 9
4" 12
Minimum
Distance
Like Figure 5.1
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