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Posted By Darren J Green
I am sure I have read somewhere that crimped ends should be used on compressed air lines, not the generally used jubilee clip. Can anyone advise in which guidance or regs this can be found (assuming I'm right............ a dangerous thing!)
Darren
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Posted By Mitch
Darren,
I would be interested ii there is anything on this as I assume crimped ends are more secure than a jubilee clip, but, what is the first thing that happens when someone runs over an airline, they cut it and reconnect the end with a jubilee clip, these thing appear from anywhere so how do you manage it if it is against some Reg or ACoP?
Mitch
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Posted By A Campbell
May depend on the rating for psi?
Higher pressure connections should also consider whip lines attached in case of disconnection and uncontrolled release!
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Posted By graeme12345
Jubilee clips have been used for years in the roofing trade, the flat roofing contractors advisory board deemed them to be safe if fitted correctly.
I have never had an issue with this area, most problems were nearly always "no extinguisher / it was not working / had not been inspected or no covers on buckets when handling" no probs with fittings coming loose or being damaged.
W. J Horrod Ltd do a kit you can buy cost about £25 plus 80 pence or so for the clips
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Posted By FAH
Darren, it really depends what the pressure in combination with the intended use might be.
I'm not aware of any specific legal requirement on this; but I am very aware of the range of BS's & BSEN's that deal with pressurised air supply equipment that are used to identify "best practice" in this case.
For instance, for breathing air, the relevant standard expects a crimped connection that is capable of withstanding a specific pull load in Newtons.
As you don't provide any info as to use or pressure, that's the best that I can do at this stage.
Frank Hallett
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Posted By Darren J Green
Sorry the pressure is anything up to 120 psi and the use is general air tools in commercial vehicle tyre replacement. Therefore, the tools get thrown around and picked up by the hose.
darren
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Posted By Mitch
Darren,
The result of picking tools up by the hose is stress fractures, inevitably at the end of the hose resulting in 'dynamic' repairs in an environment where jubilee clips are easily available, result jubilee clips. On a plus side there is nothing to stop the fitting of crimped ends and spring sheaths at the end to overcome this problem if you are concerned with jubilee clips at 120 psi. Alternatively provide workstations so that equipment can be easily stowed rather than dropped and thrown.
Mitch
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Posted By steve e ashton
I had always understood that jubilee clips have sharp edges and are likely to cut / split the hose where it is compressed at the nozzle. Wire clips or crimps are safer, since they do not cut / damage the hose..
Have I been wrong? I have not idea where I first gained this understanding - but I suspect it was in BOC guidance for Oxy Gas sets from around twenty years back?
Anyone more up-to date?
Steve
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