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Aflex Smooth Bore PTFE Hose: Bioflex Ultra

The key feature of Bioflex PTFE hose is the PTFE liner design, which comprises integral rib sections which support the tube against kinking, vacuum and pressure, and highly compressed web sections which give a smoothbore inner surface and excellent flexibility.

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Bioflex Ultra PTFE Hose

Bioflex Ultra flexible hose with PTFE liner is the best product for fluid transfer in many industries. It can be used for chemically inert, clean Pharmaceutical hoses, as a corrosion-resistant suction discharge Chemical Hose, as a fully compatible Food and Drinks Hose, and to transfer paints and other process fluids. Bioflex Ultra is used worldwide in biopharma, chemical manufacturing, research facilities, food, and drink processing plants. It has an unrivaled record for reliability, performance, long service life, and high quality.

Bioflex Ultra in Comparison with Convoluted PTFE Hose

  • Hygienic Cleanability - much better, due to no internal convolutions
  • Flow Rates - more than 2 x higher
  • Pressure Ratings - more than 1.5 x higher
  • Self Draining - excellent self draining with PTFE lined fittings
  • Non-Whistling - no whistling noise with gasses

Bioflex Ultra in Comparison with Conventional Smoothbore FEP, PFA or PTFE Lined Rubber Hose

  • No Adhesives - no toxic adhesives used in the Bioflex Ultra construction, eliminating the possibilities of Process Fluid contamination in service
  • Flexibility - much better flexibility
  • Internal Shape Control - no distortions in bore when flexed

Bioflex Ultra in Comparison with Silicone Rubber Hose

  • Hygienic Cleanability - much better, due to the non-stick PTFE Liner
  • Chemical Resistance - considerably improved, particularly to strong oxidising acids and bases
  • Temperature & Pressure Ratings - much higher temperature and pressure capability
  • Steam Resistance - permanently resistant to steam sterilising (unlike silicone hose, which has a limited life)

Temperature vs Pressure

Due to its extremely strong construction, Bioflex Ultra has outstanding resistance to temperature and pressure, much higher than that of conventional convoluted PTFE lined hose.


Maximum Working Pressure (MWP) Variation with Temperature:

MWP for SS grade hose, also for RC, BK and SI grades are as given in the graph, BUT only within the temperature range for the particular grade of hose, as given below:

Min/Max Operating Temperatures:
 Bioflex Ultra GP or AS SS -73ºC to +260ºC
 Bioflex Ultra GP or AS SS,RC & SS, BK -40ºC to +150ºC
 Bioflex Ultra GP or AS SS, SI -73ºC to +204ºC
 Bioflex Ultra GP or AS PB - MWPs for PB are as given in the table up to 80ºC, then reduced by 50% between 80ºC and 100ºC (the maximum for PB). Min temperature -30ºC.

Temperature vs Vacuum

All sizes and grades of Bioflex Ultra hose are usable at vacuum to -0.9bar up to 200ºC (100ºC for TO grades). Above this, the vacuum resistance should be reduced 2% for every degree above 200ºC (100ûC for TO grades).

Flow Rates

In practice, flow rates will vary with hose flexing, fluid viscosity, end fitting design and other parameters, but Bioflex Ultra hose flow rates are always around 2 times better than convoluted PTFE hose, when comparing hose assemblies with PTFE lined (non bore-restricted) end fittings.


Bioflex Ultra Hose - Flow Rate Calculation

If it is required to determine the flow rate of a particular hose assembly, or if it is required to determine the pressure required to generate a certain flow rate, then this can sometimes be approximately calculated by the Bioflex Ultra supplier.


It should be noted that calculations can only be made for fluids with a viscosity equal to water, and for hose assemblies with PTFE lined end fittings (no bore restrictions at the ends of the hose).

At Liquidyne, we prioritize our commitment to quality and consistency. In 2017 we achieved ISO 9001:2015 Quality Management System certification to ensure we can repeatedly deliver consistently high-quality products and solutions. Being an ISO 9001 facility, together with our USP Class VI Testing, ASME Bioprocessing Equipment (BPE), and EHEDG certification guarantee, we have the methodologies to assure quality. We will quickly and accurately rectify any issues if any of our products are ever in non-conformance.

img ‰ files/ISO_9001_Quality_Management_System_Certified.png ¶ url ‰ iso-certificate ¶ cta ‰ View Certificate ¶ txt ‰ At Liquidyne, we prioritize our commitment to quality and consistency. In 2017 we achieved ISO 9001:2015 Quality Management System certification to ensure we can repeatedly deliver consistently high-quality products and solutions. Being an ISO 9001 facility, together with our USP Class VI Testing, ASME Bioprocessing Equipment (BPE), and EHEDG certification guarantee, we have the methodologies to assure quality. We will quickly and accurately rectify any issues if any of our products are ever in non-conformance. ¶
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