Install Instructions
Viega IM-MTL 0612
724607
50
16.12 Installation Instructions
For Types K or L Hard Copper Tubing in 1/2" to 2" and Soft Copper Tubing in 1/2" to 1-1/4".
Read and understand all instructions for installing ProPress fittings. Failure to follow all
instructions may result in extensive property damage, serious injury, or death.
Note: Tubing shall be free of surface imperfections.
1. Cut copper tubing at right angles (using displacement type cutter or fine-toothed steel saw.
2. Debur tubing on inside and outside to prevent cutting fitting seal.
3. Check seal for correct fit. Do not use oils or lubricants. Use only ProPress Yellow HNBR Elements.
4. While turning slightly, slide press fitting onto tubing to the fitting stop. Note: End of tubing must contact stop
5. Mark insertion depth.
6. Insert the appropriate jaw into the pressing tool and push in holding pin until it locks into place.
7. Open the jaw and place at right angles on the fitting. Visually check insertion depth using mark on tubing.
8. Start pressing process and hold the trigger until the jaw has engaged the fitting.
9. After pressing, the jaw can be opened again.
Pressure Testing: Pressure
testing is to be carried out in
accordance with local codes.
The Smart Connect
®
Feature
provides quick and easy
identification of unpressed
connections during the
pressure testing process.
Unpressed connections are
located by pressurizing the system with a maximum
pressure range of 1/2 – 85 psi for gases and 15
– 85 psi for liquids. The SC Feature is a special
indentation in 1/2" to 2" dimensions located on
the inside surface of the fitting near the sealing
element. This indentation assures 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-free, permanent connection.
2 3
4
1
5
6
6a
7
8
9
The following standards, codes and instructions should be
followed when installing ProPressG Fittings for fuel gas.
• The installation shall be made in accordance with local codes
or in the absence of local codes, in accordance with the National Fuel Gas Code, NFPA 54,
the LP- Gas Code NFPA 58, as applicable.
• For use with type K or L copper tubing, drawn copper from 1/2" to 2" and annealed copper
from 1/2" to 1-1/4". All copper must be in compliance with ASTM B88
• The fittings are for use with fuel gases only and are intended for operating pressure
specified (maximum 125 psi).
• Undue stress or strain on the fittings and the tubing is to be avoided.
• Concealed tubing and fittings shall be protected from puncture threats.
• If the installation requires components in addition to those supplied by the fitting
manufacturer, those components shall be specified. The instructions shall state that only the
components provided or specified by the manufacturer are to be used in the installation.
• The fitting/tubing system shall not be used as a grounding electrode for an electrical system.
• The inspection, testing and purging of the installation shall be performed using procedures
specified in Part 4 of the National Fuel Gas Code, ANSI Z223.1, The LP-Gas Code NFPA
58, section 3.2 – 10 as applicable, or in accordance with the requirements of the applicable
local codes.
• For use with natural, propane, mixed and manufactured gases in the vapor state, not in the
liquid state.
• The fitting/tubing system shall not be used as a means of support.