Hose Clamp Rings?

[Submariner1]

I have been using these double eared stainless rings to secure hoses to stainless hosetails. So far no leaks whatsoever.
I elected to use 2 rings per fixture. And so positioned most ears at 90 deg. To the other.

The lowest fitting is close to the ground, so I don't want the crimped eyes being lower than the hosetail. Hence not opposite each other but diagonally positioned as per photo.

Q. Can you place both ring’s ears at the same angle of rotation (needed to clear the framework on one new joint) or must you offset the ears (so there is no possibility of a direct airway past the clamps)?

Q Does one even need 2 rings on a closely fitting 8mm bore hose (15mm OS diam) running 150 psi? Note the hosetail slides in but is almost impossible to pull off even without the clamps on. So a good fit.

I am hoping 2 rings, even with the ears placed at the same angle will still seal perfectly.
Below on this joint I can make sure the ears do not line up, but on the joint in question it would be easier if the ears lined up Horizontally.

 

[mike os]

one is normally sufficient ime

 

[The_Yellow_Ardvark]

One should be good enough.
But make sure if they are double lugs, you crimp them evenly.
Singles crimp to the ring is just below surface of those.

If you want to use double.
Space the lugs evenly apart, 90 deg for example.

We are advised to use double on fuel lines for emergency gen sets.
But only as a temp fix until a approved fitting is obtained.

Cooper Meniver do a training course and this is covered. Dull course, but free food.

 

[dan.taylor.1]

I only put 2 on when I've had an issue with it leaking or a hose blowing off. One is enough, and as above, buy the proper crimpers and make sure they're done right and should be no bother.

 

[daleyd]

Not much use now but I find the single eared ones a bit easier to get a good crimp with - the double ones are ok but I prefer the singles.

 

[Gragson]

Not much use now but I find the single eared ones a bit easier to get a good crimp with - the double ones are ok but I prefer the singles.

Agree with that, I had to replace them on my little oxy/maxigas set and a single ear on each was sufficient.

 

[daedalusminos]

I prefer this style, less chance of a leak at the nip point...

 

[MetalMonkey]

Single clamp should be fine.

Obviously better if ears are at 90, but doesn't really matter in my experience.
I’ve found usually when they leak it is because the wrong size has been used.

 

[Submariner1]

Not much use now but I find the single eared ones a bit easier to get a good crimp with - the double ones are ok but I prefer the singles.

Yeah wish I had thought a out the ground clearance before ; as a single ear sure would have helped
But need to press on with what I have.

 

[daleyd]

Yeah wish I had thought a out the ground clearance before ; as a single ear sure would have helped
But need to press on with what I have.

There’s nothing wrong with the double ones, I just find single a bit easier - I’ve got 50% less chance of screwing it up

 

[Submariner1]

Single clamp should be fine.

Obviously better if ears are at 90, but doesn't really matter in my experience.
I’ve found usually when they leak it is because the wrong size has been used.

I will try and get them as close to 90 deg on this “access difficult” joint.
and will use 2 especially as I need to abandon the 90 deg perfect point.

what with waiting 4 - 5 days for stuff , finding it doesn’t fit!, then waiting another 5 days for another item etc. This tiny project is taking for ever. At least the end is in sight.
Dam Covid - without that, one could just go a buy the lot, and stick it together in 3 days! where 2 of thise were waiting for sealant to cure!

 

[The_Yellow_Ardvark]

There’s nothing wrong with the double ones, I just find single a bit easier - I’ve got 50% less chance of screwing it up

That is you want it easy.

 

[Kram]

I prefer this style, less chance of a leak at the nip point...

View attachment 279418

"Single ear plus", they are good.
I made a mistake ordered some more on amazon but they are coming from china.
www.amazon.co.uk/gp/aw/d/B08L6JGS3G