TPi July 2009

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July 2009 Tube Products International 37
ConnectorsFi t t ings , Flanges &
Flanges and fittings
Zhejiang Feiting Pipe Co, Ltd specialises in the production of pipe flanges and
fittings of stainless steel, alloy, low temperature carbon steel and common
carbon steel. The company has an
annual output of 12,000 tons of various
material pipe fittings and 4,000 tons of
flanges.
Feiting products include butt-welding
pipe fittings, forging pipe fittings,
forging flanges manufactured strictly
according to the standards of ASME/
ANSI, MSS, API, DIN, BS, JIS and
GB, as well as to customers’ technical
drawings. The company’s products
are applied to industries such as
petroleum, petrochemical, natural gas,
fertiliser, chemical, chemical processing of coal, electric power, nuclear industry,
shipbuilding, papermaking, city fuel gas networks and building.
Zhejiang Feiting Pipe Co, Ltd – China
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A selection of products from Zhejiang S S
Feiting Pipe Co
PE-X and
aluminium fittings
Valsir produces advanced systems for
soil and waste and for heating and
potable water. Its systems include a
complete range of polypropylene pipes
and fittings with quick-fit joints and high-
density polyethylene electrofusion pipes
and fittings; a broad range of in-wall
and exposed cisterns (50 models); the
modern Silere system, a range of pipes
and fittings manufactured using sound
absorbing material; the Pexal multi-layer
pipe system and fittings; a wide selection
of traps and specific equipment; and the
new floor heating system and Silvestro,
a design suite for plumbing and heating
systems.
Valsir multi-layer pipe can be used
both for heating and potable water
with the corresponding fittings made
of a special brass alloy. The range
of products covers diameters from 14
to 75mm. The plastic material used
for the internal and external layers is
crosslinked polyethylene PE-X, while
the intermediate layer is in aluminium.
The aluminium layer is formed around
the PE-X layer and is butt-welded
with a continuous longitudinal weld.
This feature makes the pipe easy to
shape: once bent, it maintains the given
configuration. The pipe guarantees
protection against oxidation in the
internal layer of PE-X.
With the Pexal system, one pipe is used
for numerous applications: systems
for drinking water distribution, heating
and cooling systems at high and low
temperatures and for the distribution of
compressed air. The system provides
an elevated degree of hygiene, and
the maximum operating temperature is
95°C.
Valsir produces three types of fittings.
With crimp fittings, the seal is created
by deforming the pipe around the
insert of the fitting itself, by means of a
crimping operation. With compression
fittings, the seal is guaranteed by
screwing that causes the progressive
compression of the pipe, generating the
seal of the connection. The third type is
PPSU fittings, made from an innovative
‘technopolymer’.
Pexal Easy is an advanced system
of fittings made of polyphenylsulfone
(PPSU), with advanced mechanical
characteristics such as tensile strength
and modulus of elasticity. The total
passage ensures an
optimum flow since the
internal diameter of the
fitting in PPSU is the
same as the internal
diameter of the Pexal
pipe.
Pexal Easy fittings S S
The construction of Pexal pipe ▼ ▼
Even in presence of thermal movements,
the cone-shaped socket of the pipe
supplies a high resistance to loosening.
The installation is made safe by the
anti-loosening system. An innovative
blocking system of the nut on the fitting
guarantees the definitive connection
with the pipe. The system has a high
resistance to corrosion, even with
extremely concentrated and hot acids.
The combination of the multilayer pipe
and the PPSU fittings forms a totally
resistant system to chemical agents.
Valsir SpA – Italy