This liner is designed in the form of a helically corrugated tube and therefore permits very small bending radii. As Tobias Sautmann, CEO of HSI, explains: “This enables installation space to be significantly reduced, particularly with large hose diameters (minimum bending radius for DN 75 is 200 mm). At the same time, this flexibility allows hoses to be fitted in extremely confined spaces, where installation would previously have been impossible.”
Photo (a): DuPont
‘Fluorflex’ universal hoses with their helically corrugated inner liners made from DuPont™ Teflon® PTFE can be installed with very small bending radii.
Photo (b): DuPont
‘Fluorflex’ universal hoses with their helically corrugated inner liners made from DuPont™ Teflon® PTFE are suitable for applications such as transporting inorganic acid and alkali mixtures of any type and concentration as well as mineral oils and mineral oil derivatives. They can replace many conventional hose variants, which might be considered as not sufficiently flexible or resistant.
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 be supplied in an all-white design, e.g. for the pharmaceutical industry, and with an all-black (i.e. 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 up to shorter emptying times. Thanks to the inherent non-stick properties of Teflon®, the hoses are very 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 significant 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-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. The whole system is designed for working pressures of 16 bar and continuous service temperatures of 150°C. Designs for even higher temperatures are possible. Fittings can be supplied in many different materials (VA, PP, PVDF, different coatings such as PFA und ECTFE) and with all currently used connections.
DuPont Fluoropolymer Solutions is a leading producer of fluoropolymer resins, additives, films, finishes and dispersions, PTFE (polytetrafluoroethylene), PFA (perfluoroalkoxy), FEP (fluorinated ethylene propylene), ETFE (ethylene-tetrafluoroethylene) and PVF (polyvinylfluoride), marketed under the registered trademarks DuPont™ Teflon®, DuPont™ Tefzel®, DuPont™ Tedlar® and DuPont™ Zonyl®. Major markets for these fluoropolymer products include the automotive, chemical processing, semiconductor, oil exploration, chemical handling, data communication, aerospace, electronics, houseware and building industries.
DuPont is a science company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture, nutrition, electronics, communications, safety and protection, home and construction, transportation and apparel.
The DuPont Oval Logo, DuPont™, The miracles of science™ and all product names denoted with ® are registered trademarks or trademarks of DuPont or its affiliates.Note to the editor:
One in 5 materials chemistry papers may be wrong, study suggests
15.12.2017 | Georgia Institute of Technology
Scientists channel graphene to understand filtration and ion transport into cells
11.12.2017 | National Institute of Standards and Technology (NIST)
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
15.12.2017 | Power and Electrical Engineering
15.12.2017 | Materials Sciences
15.12.2017 | Life Sciences