misterg
Well-Known Member
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[snip]...using a piece of thinner hose on the smaller fitting and fitting the larger hose over it with a suitable overlap, with the inner hose covered in 5200 and the outer "join" sealed with 5200 and taped, with a couple of hose clips at the fitting ...[snip]
Not arguing with you, but genuinely interested in where you see the potential weakness of this compared to the potential weakness of a hose clamped to a fitting.
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Wishing to clarify my thoughts, rather than argue... /forums/images/graemlins/grin.gif (A bit like "would the honourable member for Hartlepool...")
I have interpreted your descriptions as: a length of suitable hose is attached at each hose tail with the approved doubled stainless steel clips. The end of the smaller hose is then covered with glue, and pushed up inside the end of the larger tube.
If that interpretation is correct, it might work. Similar things have worked for me quite well over the years, even using intermediate sizes of hose to match between widely differing diameters. It is, at the end of the day, still a bodge, and relies on finding tubes with the right match of ID/OD, and the friction / uncertain adhesion to (probably) PVC. There is no means to mechanically clamp or restrain the joint. I've found that this arrangement is impossible to get apart if you want to, but will part of its own accord at the least opportune moment (if, for example one of the hoses shrinks or hardens with age, or the pipe ends up under pressure for some reason).
Given no choice, I'm sure this would get me home, and I would be happy with it, but I think the nub is that there currently is a choice - Unless the OP is posting from the open sea, he has the pick of engineering merchants and chandlers to do the job properly, rather than scrabbling around for odds & sods in the bottom of lockers.
The idea of "sleeving" the smaller nipple with hose, and fitting the larger hose over this is (IMVHO) better, provided that the hose nipple is long enough to get the two hose clips on comfortably away from the ends of the hose nipple. The difference is that the hose is now held firmly between clamp & hose nipple.
I don't think anyone would call me a purist, but why bodge if you don't have to?
No offence intended to anyone.
Andy
[snip]...using a piece of thinner hose on the smaller fitting and fitting the larger hose over it with a suitable overlap, with the inner hose covered in 5200 and the outer "join" sealed with 5200 and taped, with a couple of hose clips at the fitting ...[snip]
Not arguing with you, but genuinely interested in where you see the potential weakness of this compared to the potential weakness of a hose clamped to a fitting.
[/ QUOTE ]
Wishing to clarify my thoughts, rather than argue... /forums/images/graemlins/grin.gif (A bit like "would the honourable member for Hartlepool...")
I have interpreted your descriptions as: a length of suitable hose is attached at each hose tail with the approved doubled stainless steel clips. The end of the smaller hose is then covered with glue, and pushed up inside the end of the larger tube.
If that interpretation is correct, it might work. Similar things have worked for me quite well over the years, even using intermediate sizes of hose to match between widely differing diameters. It is, at the end of the day, still a bodge, and relies on finding tubes with the right match of ID/OD, and the friction / uncertain adhesion to (probably) PVC. There is no means to mechanically clamp or restrain the joint. I've found that this arrangement is impossible to get apart if you want to, but will part of its own accord at the least opportune moment (if, for example one of the hoses shrinks or hardens with age, or the pipe ends up under pressure for some reason).
Given no choice, I'm sure this would get me home, and I would be happy with it, but I think the nub is that there currently is a choice - Unless the OP is posting from the open sea, he has the pick of engineering merchants and chandlers to do the job properly, rather than scrabbling around for odds & sods in the bottom of lockers.
The idea of "sleeving" the smaller nipple with hose, and fitting the larger hose over this is (IMVHO) better, provided that the hose nipple is long enough to get the two hose clips on comfortably away from the ends of the hose nipple. The difference is that the hose is now held firmly between clamp & hose nipple.
I don't think anyone would call me a purist, but why bodge if you don't have to?
No offence intended to anyone.
Andy
