Viega ProPress - Controlling Deflection; Pressing Techniques for Deflection

Product Information
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IM-PP 724607 1218 ProPress
■ As long as the tube is properly prepped and marked
and the 󶈵tting is installed according to Viega’s ProPress
Product Instructions, if there is any de󶈶ection present
after the installation of the 󶈵tting, the connection is
still acceptable and meets Viega’s manufacturing
speci󶈵cations for proper installation and warranty.
■ De󶈶ection of a press connection has no e󶈴ect on the
integrity of the system, and it can be pressure tested in
accordance with the ProPress Product Instructions.
Push-pull method
▶ Rings = Push on press tool.
▶ Jaws = Pull on press tool.
The press tool can be feathered using the trigger as needed to apply
pulling or pushing force to control de󶈶ection.
2.5.9.1 Controlling De󶈶ection
De󶈶ection while pressing can be minimized by utilizing the following
installation practices.
Alternate sides for presses
▶ Press one end of 󶈵tting.
▶ Make second press on other end of 󶈵tting from the opposite side.
Site conditions permitting.
Re-Press
▶ Press the 󶈵tting, once on each side (that is, re-press the 󶈵tting a
second time on the opposite side). Pressing the same connection
from the opposite side will usually straighten misalignment between
the tube and 󶈵tting.
■ When pressing overhead piping, it may be inconvenient to alternate
sides for each press.
■ The natural weight of the piping plus pressing on opposite sides at a
45 degree angle should adequately eliminate de󶈶ection.
■ This technique can also be used for any horizontal piping and also
when working above the piping.