TPi January 2010

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developmentsproducts &
January 2010 Tube Products International 39
Viega’s Sanpress pipe 1.4521 for
drinking water installations is made of
high-grade stainless steel: the pipe is
nickel free, making it less dependent on
fluctuating raw material prices.
With DVGW-certification, it can be
used for any drinking water installation.
‘Mixed installations’ are also possible
with the Sanpress pipe 1.4401 as well
as the Sanpress Inox and gunmetal
connectors by Viega.
The steep rise in raw material prices
have made it difficult to produce a
reliable medium-term calculation for
piping systems made of high-grade
stainless steel. Since 2006, intensive
research has been conducted into a
new high-grade stainless steel, so that
the Viega Sanpress programme could
be largely independent of these price
developments.
The Sanpress pipe 1.4521 is available
in dimensions of 12 to 108mm, and can
be shortened, de-burred or pressed
with the usual tools. Bending radii from
3.5 x d to a nominal width of 28mm is
possible.
In combination with Viega press
connectors made from high-grade
stainless steel and gunmetal, the
Sanpress pipe 1.4521 can be used
with all drinking water types without
restriction and is said to last for over
50 years. DVGW guideline W 534
confirms this system
certification.
According to Section
11 of the drinking water
ordinance, unrestricted
disinfection is possible.
High-grade stainless
steel 1.4521 has been
used for many years, for
example in Scandinavia,
for the production
of heat exchangers
and expansion tanks.
Experience of using
the material for exhaust
systems in motor
vehicles shows its high
durability.
Nickel free Sanpress pipe for high-
grade stainless steel installations
For clear identification of the Sanpress
pipe 1.4521 from other high-grade
stainless steel pipes, Viega has
introduced a uniform and distinctive
‘green’ factor. In addition, the pipes are
supplied with green plugs to protect
against contamination before final
operation.
The pipe can also be used in industrial
applications, such as the setting up of
compressed air networks or pipelines
for demineralised water.
Viega GmbH & Co KG – Germany
Viega’s Sanpress
pipe 1.4521 is
DVGW-certified
for drinking water
installation
The pipe can be processed
without restriction together
with the Viega press
connectors and fittings