Broken stainless clips Beware

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Didn't you see the /forums/images/graemlins/grin.gif perhaps I should have used the /forums/images/graemlins/ooo.gif or even the /forums/images/graemlins/wink.gif or /forums/images/graemlins/tongue.gif
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Artificial Intelligence is no match for Natural Stupidity.
 
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I dont think he knows you!!!!

[/ QUOTE ]Guess not! - Some folk take life and these forums (forae? or forii?) too seriously /forums/images/graemlins/ooo.gif
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hammer.gif
Artificial Intelligence is no match for Natural Stupidity.
 
Thanks for changing the thread title, Dan, as discussed.

I shall be interested to hear from the owners of the brand 'Jubilee' (registered trade mark); a company called L Robinson and Company (Gillingham) Limited, whether they would recommend their 'Jubilee' brand clips to be used, below the wateline. If L Robinson and Company (Gillingham) Limited (the brand owners) do recommend 'Jubilee' (registered trade mark) clips for use below the waterline, what is their advice on how to use them? How many of their 'Jubilee' (registered trade mark) clips should we place on each hose, for safety? Indeed, does L Robinson and Company (Gillingham) Limited (owners of the brand 'Jubilee') recommend 'Jubilee' (registered trade mark) clips at all, for use below the waterline?

I will be interested to hear from their agents or staff, who are clearly monitoring this thread.

My insurers might also be interested in their technical response.
 
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Somebody will be along in a minute to point out that Jubilee is a registered trade mark and should not be used as a generic term for worm-drive hose clip ....

[/ QUOTE ]You must be a psychic!!!

L Robinson and Company (Gillingham) Limited has protested! The 'Jublilee' trade mark belongs to L Robinson and Company (Gillingham) Limited. It might interest folks to know that L Robinson and Company (Gillingham) Limited are watching this thread and have made a complaint to IPC, which is why Dan had to alter some of the posts.

Who would buy a stainless steel worm-driven clip, even if it is branded 'Jubilee' from L Robinson and Company (Gillingham) Limited? There are so many alternatives at a much lower price and, arguably, a better quality.

What I want to know, from L Robinson and Company (Gillingham) Limited (owners of the 'Jubilee' trade mark) is whether their stainless worm driven clips (branded 'Jubilee') are suitable for use below the waterline and if so, what is their advice on the correct use.
 
Re: Broken stainless clips Beware

David
One has to ask the question, why on earth would the manufacturer of hose clips be looking at thse forums? How did they find this particular post? I think we have secret snitches on board!!
For example, I remember posting against what some RIBs were up to a while back, some one then took the post and pasted it on a RIB site!
Pure devilment!!
Stu
 
In the event that you don't get the information you want from the company you mention, it would probably be easier to source some stainless hose clips (316 grade or equivalent) from, say, ASAP Supplies, who will give you good technical advice on the phone.
I don't think the company you mention can monitor all the relevant threads here, although I seem to remember there have been other threads on hose clips that have taken a similar turn to this one! Usually when a company joins in on a thread about their product it adds a lot to the discussion, so perhaps they will make a contribution in the next day or so.
 
Is this not very unusal as I don't think that I have ever had one of these type ( of what ever brand)clips break as such David. Have had them 'strip' when really trying to over tighten them , but never had one snap as far as I can remember ! how common a problem is this ?
 
I have a reply from Ian at Jubilee Clips:

Thank you for your response. Not knowing too much about your application (as you can imagine our clips are used in all manner of places and we would not profess to be an expert in any of them) I will have to rely on keeping my answer to what I know about hose clips.

We manufacture our Standard Range Jubilee Hose Clips from three different materials and I think that in your application the material used will be absolutely critical to the performance of the clip. Primarily we make and sell the mild steel zinc protected product, which is not recommended for marine use. Although, it will exceed the British Standard for corrosion resistance by several times and I have not seen a mild steel clip that has out performed it in any of our tests. It has even been known to out perform 430 grade “stainless” clips! We do not use 430 grade steel in any of our products.

Our next biggest line is the 304 grade stainless clips, these offer excellent corrosion resistance and are recommended for marine use, onboard vessels, in applications that do not have direct contact with sea water. These clips may also be adequate for applications where the clip would be fully submerged and remain so constantly. I’m sure you will all have observed that it is the mixed exposure to salt water and air that causes the worst corrosion on any item and so, although I would not necessarily recommend it, a 304 grade stainless steel clip could be used in an area that has contact with water so long as it is not exposed to air.

The best corrosion resistance we can offer, and I am not aware of any hose clip manufacturer using anything superior, would be something made from 316 grade stainless steel. This is more expensive, but the corrosion resistance is as good as it gets (in hose clip terms) and our 316 grade stainless steel standard range clip is what we would recommend for marine use, especially in applications in the harshest environments where the clip will be exposed to salt water and salty air. We also offer a, “Jubilee Superclamp,” of 316 grade stainless steel. This is the same material so if the problem is just corrosion then it is not necessary to use this more expensive item. However, it does offer a higher clamping force and can handle higher pressures as well as a higher tightening torque at the expense of the range of adjustment. So if sealing is the reason for using two clips then this could be a sensible solution, marine applications easily represent our biggest market for this item so I presume there are applications where the seal and the corrosion resistance are both required to reach this higher standard.

To comment more directly on the problems you have highlighted I would suggest that the clips you have used are most likely to suffer from the following problems:
- They may not be 316 grade stainless steel. Most hose clip manufacturers would sell a 304 grade stainless product and many do not offer 316 grade. It is also not uncommon to sell a 430 grade product as stainless, even though in the UK it is not common to refer to steels outside the 300 grades as stainless, this really would not be appropriate for marine applications.
- The screw, band and housing of the clips may be made from different materials, this is most common in 430 grade clips, but is a problem that exists in some other clips too. The biggest problem here is that the corrosion resistance achieved is usually lower than that of the least resistant material used. The reason is the reaction between the two materials (one acting as the anode and the other as the cathode) essentially sacrificing the weaker of the two components and increasing the resistance of the better one. – If this is happening you will see that the clip is not evenly rusted, most likely a very rusty screw with a bright shiny housing and band.

This brings me to the next possible problem, you mention that you sometimes use two clips, and there is sense in this in respect of the fact that if this area is missed on your routine checks you might hope that if one clip were to fail the other would hold a tight seal. What I would recommend though is that you ensure that all components (not just the hose clips) are of the same material to minimise the effects of corrosion.

If you or Lemain would like some samples, or even perhaps if you would be willing to experiment, let us know. It would be interesting to see what happened if one of you were to fit 316 clips and another to fit 304 clips and to see by how much longer a 316 clip could last in your specific environment.

For more details of our products please see our website, www.jubileeclips.co.uk
 
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