NormanS
Well-known member
I have always used jubilee (type) clips, of the appropriate size, and will continue to do so.
Crimped clips for flexible hose on lpg installation
- Thread starter Little Dorrit
- Start date
VicS
Well-known member
They are allowed by the BSS for use on low pressure hose connections but they must be suitably sized ( 7.9.5/R)
All LPG hose connections:
■ must be accessible for inspection; and,
■ must be part of pre-assembled lengths of hose of proprietary
manufacture (high- and low-pressure applications); or use suitable
nozzles secured by crimped or worm-drive clips (low-pressure
applications only); and,
■ must not be made using hose clamps fixed by spring tension; and,
■ must be free of any missing components, cracks, burrs or rough
edges or signs of other damage or deterioration; and,
■ must not be so narrow as to cut into the hose; and,
■ where made with crimped or worm-drive clamps, the clamps must be
suitably sized, that is, not so oversized that the band forms an
elliptical shape, or so undersized that inadequate compression is
achieved; and,
■ be appropriately tight, that is, not so loose that the connection can be
pulled forward or back under light manual force nor so tight that the
hose is excessively pinched.
■ must be accessible for inspection; and,
■ must be part of pre-assembled lengths of hose of proprietary
manufacture (high- and low-pressure applications); or use suitable
nozzles secured by crimped or worm-drive clips (low-pressure
applications only); and,
■ must not be made using hose clamps fixed by spring tension; and,
■ must be free of any missing components, cracks, burrs or rough
edges or signs of other damage or deterioration; and,
■ must not be so narrow as to cut into the hose; and,
■ where made with crimped or worm-drive clamps, the clamps must be
suitably sized, that is, not so oversized that the band forms an
elliptical shape, or so undersized that inadequate compression is
achieved; and,
■ be appropriately tight, that is, not so loose that the connection can be
pulled forward or back under light manual force nor so tight that the
hose is excessively pinched.
Only preassembled proprietary made hose assemblies are allowed for high pressure connections.
rotrax
Well-known member
Well, our boat, of American origin, had a leak from the pro made machine crimped HP join-we used two bottles of Calor in 16 days, usually would last 2 months plus.
Not possible to purcase a pre made hose with the correct fittings-USA npt at the solenoid switch, conventional Calor fitting at the other. I purchased a new hose with the correct Calor fitting, cut off the wrong end and using two of the correct size eared crimp clips fitted the old npt fitting for the solenoid. The spigot was almost two inches long, so plenty of room for two clips.
Works for me.
Interesting that the OE American fitting, which fitted orange Calor bottles, had an "O" ring on the taper.
The UK official Calor depot said no way-bad practice-danger-evacuate area-etc, etc, etc.................
It was fine after7 years use, it was the other end which was leaking.
Fine in the States, but not here. Boat is fully EU and RCD approved, as well as the US Coastguard and American Boat Builders Association approved. So, who is correct?
Neither end leaks now, joints are secure and tight.
It will do for me!
Not possible to purcase a pre made hose with the correct fittings-USA npt at the solenoid switch, conventional Calor fitting at the other. I purchased a new hose with the correct Calor fitting, cut off the wrong end and using two of the correct size eared crimp clips fitted the old npt fitting for the solenoid. The spigot was almost two inches long, so plenty of room for two clips.
Works for me.
Interesting that the OE American fitting, which fitted orange Calor bottles, had an "O" ring on the taper.
The UK official Calor depot said no way-bad practice-danger-evacuate area-etc, etc, etc.................
It was fine after7 years use, it was the other end which was leaking.
Fine in the States, but not here. Boat is fully EU and RCD approved, as well as the US Coastguard and American Boat Builders Association approved. So, who is correct?
Neither end leaks now, joints are secure and tight.
It will do for me!
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LiftyK
Well-known member
In preparation for a boat survey for insurance purposes, I purchased two lengths of orange "8mm" gas hose to replace my dated hose that had been attached by stainless steel jubilee clips. That same day I happened to chat to a neighbour in the boat yard and he enlightened me concerning doubled eared O clips, the sort you pinch up with pincers. So far so good.
As the pipe was 8mm, I ordered some "zinc plated stainless steel double eared 8mm O clips".
All advice gratefully received, thank you.
As the pipe was 8mm, I ordered some "zinc plated stainless steel double eared 8mm O clips".
- Problem 1: they are not stainless steel as they are attracted to a magnet
- Problem 2: they are too small even to slide on to the gas hose
All advice gratefully received, thank you.
Momac
Well-known member
What's wrong with re-using the stainless steel jubilee clips that you already have?
VicS
Well-known member
In preparation for a boat survey for insurance purposes, I purchased two lengths of orange "8mm" gas hose to replace my dated hose that had been attached by stainless steel jubilee clips. That same day I happened to chat to a neighbour in the boat yard and he enlightened me concerning doubled eared O clips, the sort you pinch up with pincers. So far so good.
As the pipe was 8mm, I ordered some "zinc plated stainless steel double eared 8mm O clips".
The supplier of the hose has no specifications listed apart from '8mm'. After some investigation I believe the orange hose is generally 8mm (5/16") ID, 16mm OD. It is not obvious to me which size double eared O clip I should use. This time I will order stainless steel O clips directly from Jubilee. Much searching brought me to this thread, which I am happy to reactivate.
- Problem 1: they are not stainless steel as they are attracted to a magnet
- Problem 2: they are too small even to slide on to the gas hose
All advice gratefully received, thank you.
Orange ( high pressure) 8mm hose is 16mm OD
Black (low pressure) 8mm hose is 14mm OD
Worm dive hose clips are acceptable for low pressure connections.
Personally I prefer Mini Hose clips
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LiftyK
Well-known member
Nothing wrong with that but on the advice of my neighbour, I already purchased pincers for the o clips and now feel obliged to use o clips
LiftyK
Well-known member
Thank you Vic. May I ask how much the o clips should compress the 16mm OD? What size o clip would be appropriate for 16mm OD?
Daverw
Well-known member
Would be concerned over descriprion of zinc plated stainless steel as unlikely to be actual stainless steel. I used 13mm clips if I recall correctl, but always have a mixed set of 316 stainless on board.
Momac
Well-known member
Yes I thought that .
Can't imagine why anyone would wish to zinc plate on stainless steel.
LiftyK
Well-known member
Me neither. It sounded suspicious. I did ask my gas qualified boatyard neighbour about this strange mixture. He didn't seem concerned. I will return them anyway.
LiftyK
Well-known member
Thanks! I will try some 13mm clips.
LiftyK
Well-known member
Apologies for so many posts on what should be a simple case. Let me share some points I found while searching:
1. It's OK to use work drives on hoses below 8,3mm diameter according to
https://www.liquidgasuk.org/media/D...nd Tubing - FINAL Draft September 2016 RH.pdf
2. While pursuing the 13mm size suggested above, I find Jubilee do O clips that are 11-13 and 13-15, so it is still not clear
I believe Liquid Gas UK are a trade association but have written to them to see if they have advice to offer.
1. It's OK to use work drives on hoses below 8,3mm diameter according to
https://www.liquidgasuk.org/media/D...nd Tubing - FINAL Draft September 2016 RH.pdf
2. While pursuing the 13mm size suggested above, I find Jubilee do O clips that are 11-13 and 13-15, so it is still not clear
I believe Liquid Gas UK are a trade association but have written to them to see if they have advice to offer.
Daverw
Well-known member
Not sure if your really over thinking this stuff, you have a 16mm ld hose that needs to be compressed evenly to about 13mm, it’s about even pressure which on smaller worm drives is not always achieve. Better clamps are available, you are looking at low pressure connections compared to many applications.
stephen_h
Active member
I would use the pinched type clips. I used them for the first time this year and found they compress the tube much better.
Too easy to use the wrong size jubillee clip and not get even pressure.
Pain to change I guess, but a safer option.
Too easy to use the wrong size jubillee clip and not get even pressure.
Pain to change I guess, but a safer option.
NormanS
Well-known member
I use hose only on the low pressure side. I am capable of choosing the correct size of Jubilee clip. I consider it crazy to use a hose clip with no possible adjustment, requiring a special tool to fit, can only be removed with a hacksaw, and therefore can only be used once.
rotrax
Well-known member
Not a pain to change. I have the proper tool. One part of the jaw squeezes the 'tits' tight, the other part cuts the clip easily. Once cut it is easy to remove the pipe as the clip instantly springs open.
Gotta have the right kit - easy to close the tits with a variety of tools, but not easy to cut to remove unless the 'Knipex' special tool is to hand.
Not impossible, but not as easy.
rotrax
Well-known member
See post #57.
DownWest
Well-known member
Hum
Our domestic gas pipes seal without a clip very well. But stainless 'jubilee' clips are supplied with 'break-off' nut end, so single use. But, they have a very narrow base to the worm bit, so don't distort the pipe when tightened.
Our domestic gas pipes seal without a clip very well. But stainless 'jubilee' clips are supplied with 'break-off' nut end, so single use. But, they have a very narrow base to the worm bit, so don't distort the pipe when tightened.