metallic & ptfe hose and couplings - offshore supplies and ptfe hose and couplings.pdf ·...

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Metallic and PTFEhose and couplings

Annular Corrugated Metal Hose

Corrugated metal hose is manufactur ed fromrelatively thin wall butt welded tube into whichrounded corrugations ar e formed. The hose flexesthrough the movement of metal corrugations.

Corrugated metal hoses ar e suitable for a widerange of applications in the steelmaking, chemicalsmelting, petrochemical, automotive, materialshandling and power generation industries, andmany other fields. The hose can be used for theconveyance of fluids and gases, the corr ection ofmisalignments and the absorption of movementsand vibrations.

The advantage of metal hose over other materialsis its capability to withstand high temperatures,impacts and corr osive substances andatmospheres.

Corrugated hose is seamless, making it ideal forthe conveyance of liquids and gases underpressure.

Corrugated hoses can be used either un-reinforced or unbraided, or with wire braidreinforcement depending upon the pr essure ratingand application.

External wire braiding fitted to the hose andsecured at each end during the end connectionprocess will significantly incr ease the pr essurecapability of the hose. More than one layer of thebraid may be fitted as necessary .

The operating temperatur e of the application willhave a dir ect relationship on the lowering of thepressure capability of the hose as illustrated in thetemperature correction table on the back of ourdata sheet.

All assemblies ar e tested prior to dispatch bypneumatic test in this test the hose is filled withcompressed air and submerged in water , a leakbeing detected by air bubbles. Hydro s t a t i c testsare also available – this is were the hose assemblyis filled with water and inter nal pressure is applied,a leak being detected by water dripping fro m anypart of the assembly .

Call our Sales T eam now: + 44 (0) 1257 220 010 OR Fax + 44 (0) 1257 220 060

This data sheet shows some of the widerange of fittings suitable for stainless steelflexible hose assemblies.

Male Thr ead Swivel Female

O.D. T ube Fixed Flange

Swivel or Floating Flange Quick Connect Couplings

90°/45° Elbow Fittings Weld Prep End Fittings

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Tel: +44 (0)191 549 7335 Fax: +44 (0)191 516 0004 Email: [email protected] Website: www.hos.co.uk


This data sheet shows some of the widerange of fittings suitable for stainless steelflexible hose assemblies.

Male Thr ead Swivel Female

O.D. T ube Fixed Flange

Swivel or Floating Flange Quick Connect Couplings

90°/45° Elbow Fittings Weld Prep End Fittings




This is a convoluted PTFE lined hose, with excellentflexibility in bore sizes fr om 3/8", to 2". It is designed foruse in a wide variety of general purpose applicationssuch as automotive, steam transfer , r efrigeration andother applications wher e the temperatur e resistance,chemical resistance and ease of cleaning of the PTFEliner are necessary requirements.

CONSTRUCTIONStainless Steel braid has a liner tube made fr omconvoluted, extra flexible grade PTFE, with an outerstainless steel wire braid r einforcement.Polymer Braid has a braid made from orangepolypropylene monofilaments. This pr ovides a light-weight braid with excellent chemical resistance, but isnot usable at temperatures above 100°C (internal).Maximum working pr essures must be r educed to 50%of the pressures listed for assemblies with stainless overbraid.

Tube Only has no braid. It is very lightweight, and thetube is semi-transpar ent. It is only usable at lowpressures (less than 2 Bar). The three grades specified above ar e available with ananti-static (black) PTFE liner tube instead of the natural3, (translucent) PTFE liner tube. The anti-static hose grade is r equired when fluids with ahigh electrical resistance, such as solvent s or fuels, ar epassed through the hose. The electrical r esistancebetween the inner surface of the hose liner and the endfittings is less than 107 ohms, permitting dissipation ofany static charge, in accordance with BS2050:1978. If in

doubt, contact HOS to decide which fluids orgases require the anti-static grade.

HOSE ASSEMBLIES Hose can be supplied without end fittings attached' fordistributors to assemble themselves using eitherconventional hydraulic fittings or short tail (PTFE) fittingsand the design of pallet swage ferrule. The convolutions are easily opened out to the spigot taildiameter by screwing in a (supplied) special tool (withoutthe application of heat) after which the spigot can beinserted. Alter natively complete hose assemblies can besupplied.All conventional types of hose end fittings can be fittedto Visiflon hose assemblies. Hoses can also be suppliedwith ends "Cuffed" for customers to fit themselves.

CER TIFICA TIONHose and hose assemblies can be

supplied with full certificates ofconformity, together with test

and materials certificates. Ifthese are required, it

should be stated onthe enquiry and

order.

Convoluted PTFE

DESIGN AND PURPOSE




This is a convoluted PTFE lined hose, with excellentflexibility in bore sizes fr om 3/8", to 2". It is designed foruse in a wide variety of general purpose applicationssuch as automotive, steam transfer , r efrigeration andother applications wher e the temperatur e resistance,chemical resistance and ease of cleaning of the PTFEliner are necessary requirements.

CONSTRUCTIONStainless Steel braid has a liner tube made fr omconvoluted, extra flexible grade PTFE, with an outerstainless steel wire braid r einforcement.Polymer Braid has a braid made from orangepolypropylene monofilaments. This pr ovides a light-weight braid with excellent chemical resistance, but isnot usable at temperatures above 100°C (internal).Maximum working pr essures must be r educed to 50%of the pressures listed for assemblies with stainless overbraid.

Tube Only has no braid. It is very lightweight, and thetube is semi-transpar ent. It is only usable at lowpressures (less than 2 Bar). The three grades specified above ar e available with ananti-static (black) PTFE liner tube instead of the natural3, (translucent) PTFE liner tube. The anti-static hose grade is r equired when fluids with ahigh electrical resistance, such as solvent s or fuels, ar epassed through the hose. The electrical r esistancebetween the inner surface of the hose liner and the endfittings is less than 107 ohms, permitting dissipation ofany static charge, in accordance with BS2050:1978. If in

doubt, contact HOS to decide which fluids orgases require the anti-static grade.

HOSE ASSEMBLIES Hose can be supplied without end fittings attached' fordistributors to assemble themselves using eitherconventional hydraulic fittings or short tail (PTFE) fittingsand the design of pallet swage ferrule. The convolutions are easily opened out to the spigot taildiameter by screwing in a (supplied) special tool (withoutthe application of heat) after which the spigot can beinserted. Alter natively complete hose assemblies can besupplied.All conventional types of hose end fittings can be fittedto Visiflon hose assemblies. Hoses can also be suppliedwith ends "Cuffed" for customers to fit themselves.

CER TIFICA TIONHose and hose assemblies can be

supplied with full certificates ofconformity, together with test

and materials certificates. Ifthese are required, it

should be stated onthe enquiry and

order.

Convoluted PTFE

DESIGN AND PURPOSE


Smoothbore : PTFE Lined Flexible Hose

DESIGNHose Liner: Seamless extruded PTFE tube, madeexclusively from 'Te�on 62 or 2Fluon CD086 PTFEpolymer. The choice of these grades, together with theextrusion, heat tr eatment and quality controlprogrammes are designed to pr oduce the best qualityPTFE tube possible, ensuring minimum porosity andmaximum �exibility.

Hose Braid: Hose Braid: Braided fr om AISI grade 304stainless steel wire, bright har d drawn to a minimum1700 N/mm2 tensile str ength. The braiding pr ocess isclosely controlled to ensure even tensions and thecorrect braid angle, to give minimumexpansion/contraction under pressure.

SIZE RANGES Standard Wall: For general purpose use, includinghigh and low pressur e steam, chemicals, paints, inks,adhesives, fuels, oils, detergents, re f r i g e r a n t s andfoodstuffs.

Heavy Wall: For heavy duty use, also for use withgases up to 150 Bar pressure, and for hot/cold cyclingapplications.

'Dash': For general purpose use, and to match thepopular American 'dash' sizes, often used with'reusable'type end �ttings.

A special size range is also available for use withhydraulic end �ttings which require a slightly largerhose bore than the standar d sizes above, to permit theinsertion of the end �t tings into the hose bore.

HOSE PROPERTIESTemperature Resistance: PTFE hose is usable from - 70°C up to +230 °C, dependent upon the braid andthe working pr essure (see Speci�cations).

Chemical Resistance: PTFE is the most chemicallyresistant material known, and is only af fected by asmall number of very uncommon chemicals; FluorineGas, boiling Alkali Metals, Chlorine Tri�uoride andOxygen Di�uoride.

Flexibility with Strength: Smoothbore PTFE hose hasexcellent dynamic �ex life, and performs well at highpressures in �exing or vibrating applications.

Self Cleaning: The famous non-stick nature of PTFE ensures that material passing thr ough does notbecome 'hung up' inside the hose, creating the risk ofbacterial growth, or contamination. The hose,therefore, is e�ectively self-cleaning.

USE IN APPLICATIONUsage limitations are specified herein,but other factors may be present in anygiven application including mechanicalabuse, abrasion, safety risks to staff,etc. Unless all these details are given toHOS in advance, so that thebest possible product for theapplication can be recommended,HOS cannot accept responsibility for unsatisfactory performance.




Composite Hose

For the transfer of Fluids i.e. Fuels, Oils and Chemicals

Composite hoses ar e manufactur ed on the mandr elwrapped principle. The hose consists of an inner wirespiral upon which layers of fabric and film are wrapped,and bound with an exter nal wire spiral. The tensionbetween each other of the wire spirals gives the hose itspressure capability.

The heart of a composite hose is in the materialsselection. Fabric and film materials used includePolypropylene, Polyester and Polyamide. The wire helixescan be of galvanised steel, aluminium, stainless steel orpolypropylene coated steel.

The final selection of materials depends upon theapplication for the hose.

Various terminations can be utilised with composite hoseassemblies flanges, quick release fittings, lug fittings etc.

Associated ProductsHygienic Fittings – RJT, DIN,SMS & T riclover

Quick Connection Couplings –Cam Lock, Lever Lock, ISO etc

Flanges & Flanged Hose T ails, Ball V alves &Bespoke fittings in Carbon Steel & Stainless Steel

PU DuctingVentilation DuctingIndustrial Hose



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