Rehau EVERLOC+ Serie Instrucciones Del Producto página 21

Stress Corrosion Resistance
EVERLOC+ LF brass fittings have been tested in accordance with
NSF/ANSI 14 and comply with the requirement for stress corrosion
resistance. However, fittings should not be exposed to harmful
chemicals or aggressive water conditions that could result in opera-
tional failures.
Chemical Compatibility
There are certain chemicals that can damage the EVERLOC+
compression-sleeve system. This applies to external exposure of
chemicals and to the transport of such chemicals by the piping
system.
Chemicals that may damage the compression-sleeve system include
(but are not limited to):
- Adhesives and tapes other than those recommended by REHAU
- Oil/petroleum-based products
- Paints, solvents
- Oxidizing agents (e.g., bleach)
- Disinfectants (e.g., separate dosing unit integrated into building
distribution system)
- PVC glues, solvents, cements
Many factors, such as exposure time, temperature, pressure and other
operating parameters, can influence the performance of a system that
is exposed to a chemical. To determine the impact of a particular
chemical, short- and long-term pressure testing may be required. In
some cases, a system may be resistant to short-term exposure to the
chemical, but not resistant to continuous exposure. Each chemical
must be evaluated individually. It is the responsibility of the installing
contractor to verify chemical compatibility of any chemicals when
coming into contact with the polymer material.
Copper Soldering
Proper soldering techniques must be followed when soldering all
compression-sleeve fittings according to the Copper Development
Association (CDA) Handbook:
- The surface of the fitting soldering area must be properly cleaned for
a good solder connection. Applying flux is not considered sufficient
cleaning for the soldering area. Using a proper sanding or brush
technique is necessary to remove the surface oxides. In order to
prevent further formation of oxides, the flux should be applied
immediately after the cleaning process. A proper flux that is
compatible with the brass alloy must be used.
- Care must be taken to not overheat the soldering surface as this can
lead to the formation of oxides preventing good adhesion of the
solder material. It is imperative that the fitting is heated evenly
around the entire surface so as to not overheat one particular area.
- All completed solder joints must be tested for joint integrity following
the procedures prescribed by local applicable codes.
When soldering an EVERLOC+ fitting:
- When using an EVERLOC+ copper adapter fitting, the fitting must
be soldered onto the copper first.
- Allow the solder joint to cool to ambient room temperature prior to
making an EVERLOC+ connection.
- Never solder after EVERLOC+ connection has been made.
CAUTION
- Use gloves and a holding tool. Heated pipe or fittings can cause
burns.
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