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Convoluted 'PTFE' hose
Convoluted 'PTFE' hose assemblies, 1/4" to 4" bore, manufactured in virgin and anti-static 'PTFE', with fittings, to customers specifications.
| Nominal Bore | Wall mm |
Outside Diameter Average mm |
Min. Bend Radius mm |
Max. Working Pressure at 20OC Bar |
Max. Burst Pressure at 20OC Bar |
Max. Vacuum at 20OC mBar |
|---|---|---|---|---|---|---|
| 1/4" | 0.76 | 12.20 | 25 | 35 | 170 | 744 |
| 3/8" | 0.76 | 15.60 | 25 | 35 | 170 | 744 |
| 1/2" | 0.89 | 19.05 | 25 | 50 | 250 | 887 |
| 5/8" | 0.89 | 25.30 | 35 | 35 | 170 | 887 |
| 3/4" | 1.00 | 30.00 | 55 | 60 | 290 | 887 |
| 1" | 1.10 | 36.20 | 85 | 40 | 210 | 887 |
| 1-1/4" | 1.15 | 44.00 | 100 | 40 | 210 | 887 |
| 1-1/2" | 1.45 | 48.50 | 120 | 35 | 175 | 887 |
| 1-3/4" | 1.45 | 58.10 | 135 | 25 | 135 | 887 |
| 2" | 1.50 | 63.60 | 165 | 25 | 135 | 887 |
| 2-1/2" | 1.60 | 85.00 | 230 | 15 | 60 | 887 |
| 3" | 1.60 | 95.00 | 260 | 15 | 65 | 887 |
| 4" | 1.82 | 124.30 | 400 | 10 | 40 | 887 |
Construction:
A helically convoluted 'PTFE' (polytetrafluorethylene) inner tube, medium wall, virgin or anti-static, with an outer cover of AISI304 high tensile stainless steel braid.
Unbraided hose, along with AISI316 and polypropylene braids are also available.
Properties:
- Resistant to virtually all chemicals, except molten alkali metals or halogens at elevated temperatures.
- Temperature range: -70°C to +260°C.
- Non-sticking, easy to clean.
- Excellent mechanical resistance for vibrations and flexing.
- FDA approved resin that guarantees food, cosmetic and pharmaceutical applications.
- Non-flammable.
- Non-aging and very good U.V. resistance.
- Chemically inert.
- Good dielectric properties.
- Low coefficient of friction ensuring low pressure drop.
End Fittings:
- Female threads, Bspp, Bspt, Npt, Metric, IDF, SMS, RJT, DIN11851, JIC, SAE etc.
- Male threads, Bspp, Bspt, Npt, Metric, IDF, SMS, RJT, DIN11851, JIC, SAE etc.
- Cam & Groove, couplers and adaptors.
- Flanges, 'Tafted' ASA, DIN2576, BS EN 1092, BS10, Triclover
- Pipe ends, manufactured to customers dimensions.
- Specials
Tafting:
'Tafting' is a process which allows the lining of the hose to be extended through the bore of the end fitting and across the sealing face, in one, continuous length.
The advantage of 'Tafting' is that all wetted parts are lined with 'PTFE' and that there are no joins, overlaps, ridges or week spot inside the hose assembly.
Most fittings with a flat sealing face at 90O to the bore, in sizes 1" or above, are suitable for 'Tafting'.
| PTFE 'Tafting' in the hose bore | PTFE 'Tafted' over the fitting face |
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The pressure capacity of Convoluted 'PTFE' Hose is affected by temperature. A temperature correction factor needs to be applied to the working pressure stated above, when working at temperatures other than 20O C.
Please contact our sales office in these cases.
'PTFE' smooth bore hose is also available with fittings to customer specifications.
