Submittal Sheet

Engineering Speci󶈵cations
9 of 24SM-PP 0520 ProPress Stainless
3.3InstallationGeneralLocations
Plans indicate general location and arrangement of piping systems. Identified locations and arrangements are used
to size pipe and calculate friction loss, expansion, pump sizing, and other design considerations. Install piping as
indicated, except where deviations to layout are approved on coordination drawings.
3.4Installation
A. Pressure rating: install components having a pressure rating equal to or greater than the system operating pressure.
B. Install piping free of sags, bends, and kinks.
C. Change in direction: install fittings for changes in direction and branch connections.
D. Press connections: stainless steel press fittings shall be made in accordance with the manufacturer’s installation
instructions. The pipe shall be fully inserted into the fitting and the pipe marked at the shoulder of the fitting. The
fitting alignment shall be checked against the mark on the pipe to assure the pipe is fully engaged (inserted) in
the fitting. The joints shall be pressed using the tool approved by the manufacturer.
E. Threaded joints: threaded joints shall have pipe joint compound or teflon tape applied to the male threads only.
Tighten joint with a wrench and backup wrench as required.
F. Pipe protection: provide protection against abrasion where stainless steel pipe is in contact with other building
members by wrapping with an approved tape, pipe insulation, or otherwise suitable method of isolation.
G. Penetration protection: provide allowance for thermal expansion and contraction of stainless steel pipe passing
through a wall, floor, ceiling, or partition by wrapping with an approved tape or pipe insulation or by installing
through an appropriately sized sleeve. Penetrations for fire resistant rated assemblies shall maintain the rating of
the assembly.
H. Backfill material: backfill material shall not include any ashes, cinders, refuse, stones, boulders, or other materials
which can damage or break the pipe or promote corrosive action in any trench or excavation in which pipe is
installed.
I. Horizontal support: install hangers for horizontal piping in accordance with local code or the following maximum
spacing and minimum rod sizes.
NominalPipeSize(in) StainlessSteelPipeMax.Span(ft) Min.RodDiameter(in)
Up to ¾ 10 ⅜
1 10 ⅜
1¼ 10 ⅜
1½ 10 ⅜
2 10 ⅜
2½ 11 ½
3 12 ½
4 14 ⅝
All systems must be installed per local codes and/or standards and requirements. Consult the Viega technical
support department before installing the system in other applications or applications with temperatures and/or
pressures outside the stated ratings. Refer to Viega’s Application Guide for more information.
J. Vertical support: vertical stainless steel pipe shall be supported at each floor or at 10 foot intervals.
K. Galvanic corrosion: hangers and supports shall be either stainless steel or vinyl coated to prevent galvanic
corrosion between the pipe and the supporting member.
L. Restraint: in seismic areas, stainless steel pipe shall be installed to withstand all seismic forces.
M. Identification: stainless steel pipe systems shall be identified in accordance with the requirements of ASME A13.1.