Tel: +386 1 518-17-24
Fax: +386 1 256-73-53
GSM: +386 51 301 955

Bioflex Ultra

Bioflex Ultra PTFE lined flexible hose is the premium product used to transfer process fluids in a wide variety of industries. It is used as a chemically inert, easy clean Pharmaceutical hose, a corrosion resistant suction discharge Chemical hose, a fully compatible Food and Drinks hose, and a hose to transfer paints, resins, inks and other process fluids. Bioflex Ultra is used in biopharm and chemical manufacturing and research facilities, and food and drink processing plants all over the world, and has an unrivalled reputation for reliability, performance and long service life.

Brochure Bioflex-Ultra.pdf

HOSE CONSTRUCTION

Bioflex Ultra Hose Design Options

Bioflex Ultra Hose Grades are made up by combining the Design Options, which are defined by 2 letters as shown below, and fully described in the linked sections.

For example, “Bioflex Ultra AS, PB, SG” defines a hose with an Antistatic PTFE liner (AS) and a Polypropylene braid (PB) and an outer Safegard (SG) spiral HDPE protection sleeve.

PTFE Liner Tube Options – GP (Natural PTFE) and AS (Antistatic PTFE)

Braid Options – TO (Tube Only, No Braid), SS (316 SS Wire), and PB (Polypropylene)

Rubber Cover Options – RC (Blue EPDM), BK (Black EPDM) and SI (Silicone Rubber)

External Protection Options – SR (Scuff Rings), SG (Safegard Spiral) and PC (SS Wire Coil)

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)

Bioflex Ultra GP, SS with a PTFE Lined Sanitary Triclover Fitting

PROPERTIES

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 -73˚C to +260˚C
Bioflex Ultra GP or AS SS,RC & SS, BK -40˚C to +150˚C
Bioflex Ultra GP or AS SS, SI -73˚C to +204˚C
Bioflex Ultra GP or AS PB – MWPs for PB are as given in the graph up to 80˚C, then reduced by 50% between 80˚C and 100˚C (the maximum for PB).
Temperature vs Vacuum
All sizes and grades of Bioflex Ultra hose are usable at vacuum to -0.9bar up to 200˚C (100˚C for TO grades). Above this, the vacuum resistance should be reduced 2% for every degree above 200˚C (100˚C for TO grades).

Temperature & Maximum Working Pressure Graph for Bioflex Ultra

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).

The following information should be given to the supplier
To calculate the Flow Rate in Cubic Metres per Hour:

Pressure in Bars at the Entry into the Hose Assembly – subtracted from – Pressure in Bars at the Exit from the Hose Assembly (to calculate Pressure Drop over the Hose Length).
The hose configuration (roughly straight, or 33% Bends, or 66% Bends, or 100% Tightly Coiled)

OR To Calculate the Pressure Drop in bars over the length of the Hose Assembly:

Required Flow Rate in Cubic Metres per Hour
The hose configuration (roughly straight, or 33% Bends, or 66% Bends, or 100% Tightly Coiled)

SPECIFICATIONS AND PROPERTIES

SIZE, GRADES, BEND RADII & DIMENSIONS

*The 7/8”, 13/8” and 17/8” hose sizes are only suitable for use with PTFE lined sanitary clamp (or triclover) end fittings and PTFE lined I-Line end fittings

SIZES, GRADES, PRESSURES & WEIGHTS

* The 7/8”, 13/8” and 17/8” hose sizes are only suitable for use with PTFE lined sanitary clamp (or triclover) end fittings and PTFE lined I-Line end fittings.

** The Maximum Working Pressure of a hose assembly is limited to the lowest of the MWP’s of either of the two end fittings, or of the hose itself as listed above. The MWP of the hose reduces as the operating temperature increases as specified in the Graph.