TPi July 2009

Connectors Fi t t ings , Flanges &

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.

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. A selection of products from Zhejiang S S Feiting Pipe Co

Zhejiang Feiting Pipe Co, Ltd – China sales@chinafeiting.com • www.chinafeiting.com

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

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 valsir@valsir.it www.valsir.it

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.

The construction of Pexal pipe ▼ ▼

Pexal Easy fittings S S

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July 2009 Tube Products International