TPi April 2008

developments products & Universal hose with corrugated tube liner permits small bending radii

be supplied in an all- white design, eg for the pharmaceutical industry, and with an all-black (ie fully conductive) inner liner. The helical geometry not only ensures high flexibility but also gives the transported medium angular momentum that permits higher conveying speeds and shorter emptying times. Thanks to the inherent non-stick

Fluorflex universal hoses, developed by HIS Schlauch- und Armaturentechnik, Germany, in partnership with Fluortubing, Netherlands, and ContiTech Fluid, Germany, are constructed with an inner liner made from DuPont ™ Teflon ® PTFE 62-N. The liner is designed in the form of a helically corrugated tube and therefore permits very small bending radii. As TobiasSautmann, CEOof HSI, explained, “This enables installation space to be significantly reduced, particularly with large hose diameters (minimum bending radius for DN 75 is 200mm). At the same time, this flexibility allows hoses to be fitted in extremely confined spaces, where installation would previously have been impossible.” Teflon PTFE 62-N combines very good flexural fatigue strength and stress crack resistance with high thermal stability and excellent resistance to nearly all media used in food and pharmaceutical production. This often makes it possible to reduce stock to just one type of hose. A black conductive strip integrated into the corrugated tube dissipates static electricity. The tube can also

DuPont Fluorflex universal hoses have helically corrugated S S inner liners made from DuPont Teflon PTFE

fabricated quickly in this way, it is usually unnecessary to stock replacement hose lines. A multi-ply outer jacket comprising an EPDM intermediate layer, a reinforcing braid made from DuPont Kevlar ® brand fibres and a covering layer specially tailored for the application protects the Teflon inner liner from damage. Besides EPDM black, the covering layer can also be supplied in NBR black for contact with oil and gasoline, NBR black high temperature blend for temperatures above 150°C, NBR blue for food applications and EPDM grey for pharmaceutical production. New products are being developed for transport, chemical engineering and the construction industry. Thewholesystem isdesigned forworking pressures of 16 bar and continuous service temperatures of 150°C. Designs for even higher temperatures are also possible. Fittings can be supplied in many different materials (VA, PP, PVDF, and different coatings such as PFA und ECTFE) and with all currently used connections.

properties of Teflon, the hoses are easy to clean, even when carrying very high-viscosity media. This, together with the possibility of faster emptying for cleaning or material changes, can achieve cost savings in production. Another advantage for users is the ease with which the Fluorflex hose system can be fabricated on-site using safety clamps without the need for laborious de-corrugation in a salt bath, compressing sleeves or purchasing the costly machinery required for this. Since hose systems can be custom-

LITE aluminium flanges

LITE flanges from Fonderia Fazzini are 30% lighter than current aluminium flanges, thanks to an exclusive truncated cone shape, and they present high strength, certified by RWTüV. The company states that the flanges are also cheaper, saving purchase, transport and installation costs. LITE flanges are compatible with ENPN10/16 standards and they provide an alternative to traditional loose flanges.

DuPont – USA www.dupont.com

Fonderia Fazzini’s LITE flanges S S

HSI Schlauch- und Armaturentechnik GmbH – Germany

Fonderia Fazzini Srl – Italy info@fonderiafazzini.it • www.fonderiafazzini.it

info@hsi-schlauchtechnik.de www.hsi-schlauchtechnik.de

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Tube Products International April 2008

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