Crimped clips for flexible hose on lpg installation

Little Dorrit

Little Dorrit

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What are these? I have been told I must not use worm drive jubilee clips but crimped clips to secure the flexible hose to the regulator and other connections. Having read the The Boat Safety Scheme Essential Guide there does not seem to be any mention of this. Is this a new requirement and where can I buy suitable clips?
 
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paella said:
What are these? I have been told I must not use worm drive jubilee clips but crimped clips to secure the flexible hose to the regulator and other connections. Having read the The Boat Safety Scheme Essential Guide there does not seem to be any mention of this. Is this a new requirement and where can I buy suitable clips?
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Ear clips. Single ear or double ear.

They ought to be available from anywhere that sells the hose and other gas fittings. They are fitted with a tool that resembles carpenters pincers ...

IMO Mini hose clips are also suitable :
41eO5WJoJEL._AC_US218_.jpg
 
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VicS said:
...They ought to be available from anywhere that sells the hose and other gas fittings. They are fitted with a tool that resembles carpenters pincers ...
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Funny you should say that, a blunt pair of carpenters pincers will do the job very well. Also Vise-grips, using the very end of the jaws, and using the screw adjustment to get the right amount of crimp.
 
prv said:
The ear clips are certainly neater, but is there a specific reason that jubilee type clips are frowned on?
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They are supposed to chew up the pipe, though to be honest I can't see much difference with the fuel hose clips (as per VicS) which I use all over the place. The inside surfaces are just the same.
 
prv said:
The ear clips are certainly neater, but is there a specific reason that jubilee type clips are frowned on?

Pete
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I think jubilee clips are deemed to form an elliptical shape and not therefore create a uniform seal around the hose. They are also likely to pinch the hose and might have sharp edges. I'm on Cricket duty hence late reply!
 
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You dont have to look far to buy an orange hose complete with worm drive (jubilee) clips which presumably means they are acceptable.
 
Martyn

I think that is a way of the hose seller adding "value" and convenience. I've looked at the ebay ads and the clips are nearly all the type that squishes and distorts the hose. It is relatively easy to stick to the approved type, so perhaps best to avoid a compliance issue. There must be a physical reason, based on industry experience, why ordinary jubilees are not liked.
 
sarabande said:
..... There must be a physical reason, based on industry experience, why ordinary jubilees are not liked.
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In general they are not supported for use on small diameter hoses because the worm drive can easily jump and lose grip giving a poor seal. This is because on the small diameter clips only one or two teeth are engaging compared to the larger diameters where many teeth engage. Brands like Jubilee are better quality and this is not an issue. There have been cases where the clip does grip but is then overtightened significantly, just in case it jumps, and then the hose is crushed. This causes an increased probability that the hose will tear at the interface between the clamped and unclamped part. That is what was explained to me, many moons ago. I think though that low quality clips and insufficient clamping pressure is the primary reason.
 
sarabande said:
Martyn

I think that is a way of the hose seller adding "value" and convenience. I've looked at the ebay ads and the clips are nearly all the type that squishes and distorts the hose. It is relatively easy to stick to the approved type, so perhaps best to avoid a compliance issue. There must be a physical reason, based on industry experience, why ordinary jubilees are not liked.
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One obvious reason why "industry" likes them is that they are not reusable, so leading to more sales. Cynical? Moi?
 
Also suspect that the use of crimped means that if the correct one that matches the hose OD and ID is used it that cannot be over tightend or fitted loose. Human error removed, I suspect that if you checked the fitting of identical worm clips the compression would be very different on each.
 
paella said:
What are these? I have been told I must not use worm drive jubilee clips but crimped clips to secure the flexible hose to the regulator and other connections. Having read the The Boat Safety Scheme Essential Guide there does not seem to be any mention of this. Is this a new requirement and where can I buy suitable clips?
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I have always found that small diameter worm drive clips tend to slip when tightened as the worm contact/engagement area reduces as the clip diameter gets smaller.

I have used cable ties on soft tube (rubber) low pressure pipes pulling tight with cable tie gun

ken5168400k_app1.jpg


plastic pipe clips.

Axial-Tension-20kg-Tube-Clamps-Suppliers-Plastic-Tubing-Clamps-Travel-Diameter-19-6-21-5-mm.jpg


Easy to tighten and undo with long nose pliers.

These are quite often used on car cooling pipes so do seal under low pressure.

ydn-c-w320h240.jpg


Various types of eye clamps like here

https://www.google.co.za/search?biw...4.psy-ab..26.7.2036.0..0i67k1.553.Dt9xd7zsJP4

I use these on rubber fuel pipe pipes as the worm drive of that small size do not tighten. In my view also very good for LPG piping.
 
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Would not like to use these on gas pipes, the fuel line pressures are quite low, most car fuel lines are solid using hydraulic fittings
 
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