TPi November 2014

products & developments High purity PFA piping system

pharmaceutical, biotech, laboratory and chemical process applications.

proprietary beadless welding system is claimed to provide improved flow and drainability, and eliminates media disturbances. The Purflon piping system utilises the automated SP series welding equipment to reduce leaks and system risk from improper manual welds. The system is offered in SDR21 rated at 150 psi across all sizes. The initial size range is 20 to 32mm (½" to 1"), with additional sizes to be available in the future. The Purflon PFA material can handle virtually any corrosive chemical in use. It is also recognised for its resistance to heat and high temperature acids. It is suitable for use in chemical distribution lines for semiconductor,

Asahi/America has introduced the Purflon ® PFA high purity piping system. Purflon is a complete piping system constructed from ultra high purity PFA resin (SEMI tested), and offers high chemical and temperature resistance, making it suitable for aggressive applications. Purflon is complemented by Asahi’s SP series IR and beadless welding equipment. In addition to pipe and fittings, a wide range of Dymatrix™ PFA valves are available to complete the system.

Asahi/America specialises in providing solutions for fluid handling systems, individualised to meet virtually any requirement. The company manufactures corrosion-resistant thermoplastic fluid handling products, including valves, actuators, pipe and fittings. It maintains an extensive custom fabrication department, and provides on-site consultation, supervision and training where required.

Asahi/America, Inc – USA asahi@asahi-america.com www.asahi-america.com

Purflon can be joined using either the IR or beadless welding process. The

Permeability dangers in tubes and piping Tubes and piping can leak, not only where they might be expected to, but also by gases permeating both in and out through the material of the tube itself. This has caused missiles to crash, patients to be given contaminated anaesthetic, and fuel cans to explode in the laboratory. new instrument that can determine this ‘vapour permeability’ for a wide range of gases, including O 2 , nitrogen, anaesthetic gases, hydrocarbons and water vapour. minutes for some gases. Conventional gravimetric measurement takes days or even weeks, and is less accurate and repeatable. The new instrument is simple to use, offering highly automated computer- ised control, and can be configured to cope with several samples at a time, giving ultra-accurate results.

As well as measuring this for tubes and piping, the equipment can be configured to measure permeability for flat material samples, finished components, seals, equipment and even packaging. The Versaperm meter can give results in as little as 30

For safety, legislation and quality reasons, permeability expert Versaperm has introduced a highly sensitive

Versaperm Ltd – UK www.versaperm.com

Continued growth of fence manufacturer Stephens Pipe & Steel is a chain-link fence manufacturer and distributor, with 13 stocking locations throughout the USA, and corporate headquarters in Russell Springs, Kentucky. extrusion line were added early in 2014, taking total capability to 12,000 tons per year of colour coated strand wire.

Steel continues to offer products from various countries throughout the world. Fence specifications and customer demand drive the purchasing division to provide not only domestically manufactured products, but also those that are competitively priced in the foreign market. After 40 years in business, the company attributes its continued growth and success to a strong management team, dedicated employees and loyal customers.

In 2012 Stephens added its first tube mill, followed by a second in 2013. Both tube mills are located at the Kentucky branch, and are on-line to produce 33,000 tons of galvanised fence pipe this year. A portion of the tonnage produced at the tube mill is used for in-house manufacturing by Stephens for nationally recognised retail products. The remainder is sold into the fence market or other related construction projects. Along with an extensive line of domestic materials, Stephens Pipe &

In the last two years the company has added a new wire drawing line capable of producing 24,000 tons per year of strand wire used to weave into chain- link fabric. The galvanised wire will be used in-house at Kentucky or directed out to one of the many weaving lines at the various branch locations. The fourth fused and bonded line and third

Stephens Pipe & Steel, LLC – USA www.spsfence.com

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Tube Products International November 2014

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