I have been promoting during my frequent SHEQ vists to our rooffing sites that i do not want to see jubilee clips connecting hoses to LPG bottles or gas guns. To their credit most have bought the double eared o clips and installed them but today one clip failed at the connection to the gas gun and minor burns were sustained by the roofing operative.

Am i right to continue to promote the o clip use?

Many years of camping in the scouts followed by family holidays at campsites saw jubilee clips holding the rubber hosing to the regulators of gas bottles and the ovens/cookers/heaters/barbeques they were atttached to.

Moving up the salary tree to static caravans at major operator sites and I found myself still staring at jubilee clips on the bottled gas supply.

Given their track record in such circumstances (as well as under the bonnet) what is the problem with a properly fitted jubilee clip? NO special tooling required any readily available flat, star, philips screw driver.

Now in other situations where the feed supply is a liquid under unregulated pump pressure double clipping becomes the order of the day and securely fastened with a purpose designed jubilee driver.

A very long time ago I’m sure I read something from BOC where they stated that jubilee clips should not be used, only O clips. I’m sure the reason given was that the jubilee clip does not tighten evenly. I was also told by an instructor this was because although the band bends the bit the screw drive goes into does not bend and seal evenly all the way around. I was also under the impression you needed training to put these on properly. However as said this was some time ago now and I had a quick look at BOC site and could not find the same info.

Originally Posted by: chris42

I’m sure the reason given was that the jubilee clip does not tighten evenly. I was also told by an instructor this was because although the band bends the bit the screw drive goes into does not bend and seal evenly all the way around.

Quite often that will depend if the correct size of clip has been selected for the pipe - the situation you are describing happens when the clip is too large in diameter for the pipe you are trying to fix.

The seal meanwhile comes from the inner wall of the pipe against the inserted spigot.

Pipe diameter appears to be the main consideration rather than the type of clip

https://www.liquidgasuk.org/uploads/DOC62AB39137DDE9.pdf

Just for clarity Jubliee clips and hose clamps are two different things.

Firstly Jubliee is a trade name and was the first such design for such a clamp and therefore everyone refers to any type of pipe clamp incorrectly as such.

The main difference is in the purpose of application. Jubliee clips are for attaching hoses or pipes to stay in place whereas hose clamps are for tightening hose pipes to prevent leaks. A standard jublee clip where the screw thread passes through a barrel attached on the end of the clamp strap are not by design perfectly round so when tightened it will have a flat area below the tightening mechanism which will unfortunately allow for small leaks.

Hose clamps are round and designed to not leak unless overtightened and thus damaging the hose or under tightening allowing a leak to occur. Their design and profile of these items has no flat areas by design.

Thats why when you compete something like your gas safe course for the handling and use of compress gas cylinders you are taught never to use anything other than hose clamps on gas hoses.