TPi April 2010

Fi t t ings & f langes

Butterfly valves: ‘torque’ less and achieve more Saint-Gobain PAM UK has developed a new range of Eurostop butterfly valves that provide a modern solution for network engineers. Used typically as isolation devices on pipelines, waterworks and hydroelectric plants, Eurostop butterfly valves offer cost-saving benefits over traditional gate valves typically used in this application. Due to the size differential between a butterfly valve and gate valve in larger diameters, butterfly valves require less depth of cover during installation. This means less concrete is required to build the valve chamber and so creates a reduction in CO 2 emissions. Due the nature of butterfly valves, the Eurostop does not require a diverter valve to help regulate differential pressure to reduce the opening torque of the valve. Eurostop butterfly valves draw on 30 years of design experience at Saint-Gobain PAM, utilising the most up-to-date design software, to optimise hydraulic performance, durability and sealing. The ductile iron body and disc create a high strength-to-weight ratio and a safety factor in excess of 4. Operating torques are significantly reduced due to the double eccentricity of the disc and the fact that each valve is fitted with an AUMA gearbox as standard. The valves offer low head loss in the fully open position and a perfectly watertight seal when closed. Optimum sealing is achieved through the presence of an automatic continuous gasket and stainless steel cold rolled sealing seat that prevents thermal stresses and blowholes. Eurostop butterfly valves fully comply with 1074-1 and 2, EN593 and ISO 10631 and are available for both water and sewage applications PN10, PN16 and PN25. They are available in manual, buried, flange mounted for actuator, or actuated versions.

High pressure tube connector guide Parker Hannifin, a manufacturer of motion and control technologies and systems, has published a new 40-page guide to its range of ferrule-less tube connectors for high-pressure fluid applications, which provide permanent connections for instrumentation tubing systems operating to 20,000psi/1,380 bar. The company claims that its Phastite connectors, which are assembled by means of a push-fit operation taking seconds, can reduce installation costs by factors of up to 90% or more compared with welded or cone-and-thread fittings. The guide describes the technology and sealing principle, the assembly process, and the advantages of the connection system compared with other approaches. It also provides detailed specifications and selection information for the various shapes and sizes of fitting for tube diameters from 6 to 25 mm ( 1 / 4 " to 1"), and information on the associated handheld or bench-top assembly tools.

The guide is available for download at www.ipde-innovations.com/lp/phastite/

Parker Hannifin – UK ipd@parker.com • www.parker.com

Flanges and fittings from China Maxvalue Industries Co Ltd is a specialised manufacturer and supplier of flanges and fittings.

For fittings, Maxvalue mainly produces stainless steel screwed fittings and butt-welding fittings using stainless steel and carbon steel. The company’s sanitary fittings are widely used in pharmaceutical, beer, food, dairy, beverage and chemical industries. The company holds ISO 9001 and TUV certificates, and its total exports amount to around US$20mn per year. Maxvalue Industries Co Ltd – China info@maxvalue.net www.maxvalue.net

The company produces many kinds of flanges, such as slip-on, welding neck, blind and lap joint, and sizes range from 1 / 2 " to 24". The main materials used are stainless steel, carbon steel, duplex, super duplex, nickel alloys, copper nickel, titanium and special alloys, and standards include ANSI, DIN, EN, UNI, BS, JIS, AS, NFE and SAE.

Maxvalue Industries manufactures a wide range of flanges and fittings

Saint-Gobain PAM UK www.saint-gobain-pam.co.uk

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April 2010 Tube Products International