Visiflon (Hyperline V) CONVOLUTED PTFE LINED FLEXIBLE HOSE • VERY FLEXIBLE • CHEMICAL RESISTANT • TEMPERATURE RESISTANT

Front Cover PTFE - The Optimum Choice For Visiflon Hose Linings Visiflon (Hyperline V) Hose and Hose Grades Visiflon Hose Specifications and Properties Visiflon Hose Supply Options, Loose Hose & Assemblies Visiflon Hose Assembly Instructions Special Usage Conditions Visiflon Hose - Quality Assurance Certificates and Approvals Correct Hose Configuration Back Cover

PTFE - THE OPTIMUM CHOICE FOR VISIFLON HOSE LININGS PTFE, or Polytetrafluoroethylene, comprises long-chain Section from a PTFE Molecule, 16 Angstrom Units long. molecules of carbon atoms, each linked to two fluorine atoms. The fluorine atoms provide a helical spiral which surrounds the carbon chain and protects it. It is this structure which creates the unique properties for which PTFE is well-known. Excellent Chemical Resistance PTFE is renowned as the most chemically resistant material known. Only a very few, very unusual substances and conditions can affect it, like Fluorine gas at high temperature...

VISIFLON (HYPERLINE V) HOSE AND HOSE GRADES Visiflon was previously named Hyperline V - either name applies, but Visiflon is now the conventional name applied. Visiflon includes a helically convoluted PTFE liner tube, and the tube is fully convoluted inside and out. (This is different to Hyperline FX tube, which is only convoluted on the outer surface). This convoluted liner design makes the hose very flexible and very kink resistant across the size range. Visiflon Hose Assembly with a Fixed Male End Fitting crimped on to the hose Grade 304 Stainless Steel Wire Braid PTFE Liner is convoluted...

VISIFLON HOSE : SPECIFICATIONS & PROPERTIES SPECIFICATIONS FOR VISIFLON HOSE GRADES Note: Specifications listed below are for non-AS Grades. For AS Grades the specifications are all the same, except that “AS” is added to the Grade Reference, and the Part Number reads “-110-” in place of “-100-”. Nominal *Actual Hose Hose Bore Size Size in Hose Grade Outside Maximum Minimum Bend Diameter of Working Radius Tube or Braid Pressure (MWP) psi Kg/mtr lbs/Ft Hose Part Number Weight per Unit Length *Visiflon Hose assemblies require that the convolutions at the ends of the hose are opened out to accept...

VISIFLON HOSE - SUPPLY OPTIONS, LOOSE HOSE & ASSEMBLIES SUPPLY OPTIONS : Visiflon hose can either be supplied as made up and crimped hose assemblies, or as loose hose for customers to assemble themselves, using ferrules supplied by Aflex Hose, and either standard hydraulic end fittings or PTFE Tail end fittings. LOOSE HOSE : Visiflon hose can be supplied loose, in coils or on wooden reels if required, for Customers to assemble themselves. For self-assembly, Customers must purchase not only the hose, but also the ferrules from Aflex Hose. If PTFE Tail design fittings are used, these must also...

VISIFLON HOSE ASSEMBLY INSTRUCTIONS ASSEMBLY INSTRUCTIONS : 1. Cut the hose to the required length, preferably using a hose cut off machine with a hardened steel blade, allowing for the length of the end fitting. 2. Assemble the correct ferrules (see list) on to the hose ends. 3. Open the hose bore, by screwing in then pulling out the correct Visiflon Opening Tool (Manual or Motorised). For hydraulic fittings, use the basic tool. For PTFE tail fittings, add the correct collar to the tool. 4. Insert the end fitting, then push the ferrule fully over the hose up to the end fitting. 5. Crimp the...

VISIFLON HOSE : SPECIAL USAGE CONDITIONS PTFE Hose-Use with Alkali Metals, Halogens and Halogen containing Chemicals PTFE hose liners react chemically with Fluorine, Chlorine Trifluoride and molten Alkali Metals. When PTFE lined hose is used to carry Chlorine or Bromine, either as gasses or fluids, they will diffuse into and through the PTFE liner wall thickness. Trace quantities will then combine with atmospheric moisture to corrode any braid/rubber outer coverings. Heavily halogenated chemicals, like Hydrogen Fluoride, Hydrogen Chloride, Phosgene (Carbonyl Chloride) Carbon Tetrachloride and...

VISIFLON HOSE : QUALITY ASSURANCE CERTIFICATES AND APPROVALS Visiflon Hose and Quality Assurance, Certification and Approvals B S E N I S O 9001:2008 Aflex products are all manufactured in accordance with BS EN ISO 9001: 2008 Quality Management Systems independently assessed and registered by National Quality Assurance Limited (NQA). T S 16949 Aflex Hose Ltd manufactures PTFE flexible hose for the automotive industry in accordance with TS16949 and is assessed and certified by National Quality Assurance Limited (NQA). FDA The Materials used to manufacture the natural PTFE Tube liner conforms to...

HOSE CONFIGURATION & LENGTH CALCULATIONS - for BEND RADIUS Hose Configuration Requirements Hose Assemblies are usually connected at both ends in service. They may then either remain in a fixed, or static configuration or in a flexing, or dynamic configuration. Whether static or dynamic, the First Rule concerning the configuration of the hose is that the bend radius of the hose must never be less than the Minimum Bend Radius (MBR) for the hose as listed in the relevant hose brochure. The most common situation when this is likely to occur is when the hose is flexed at the end fitting, with stress...

HOSE CONFIGURATION & LENGTH CALCULATIONS - for ABRASION & TORQUE The Third Rule is that the hose configuration should always be designed, and supported where necessary, to avoid any possibility of external abrasion. In some cases, the length, configuration and angle of the hose can be designed to avoid abrasion. In others, static or moving support frames or support wheels are required. Incorrect - Hose abrasion against hose) Incorrect - Abrasion inside support Correct - No hose abrasion Correct - No abrasion over support The Fourth Rule is that the hose must not be subjected to torque, either...

HOSE CONFIGURATION & LENGTH CALCULATIONS - for LENGTH CALCULATIONS CALCULATING THE HOSE LENGTH The formula for calculating the bent section of the hose length around a radius is derived from the basic formula that the circumference of a circle = 2πR, where R = the radius of the circle, and π = a constant, = 3.142. So, if the hose goes around a 90˚ bend, which is 1/4 of a full circumference, and the radius of the bend is R, then the length of the hose around the bend is = 1/4 x 2πR. Or half way round, in a U-shape, = 1/2 x 2πR. Note : In calculating the length of a hose assembly, the (non-flexible)...