New Jabsco, new hose, 2 clips, still leaks!!

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pcatterall

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I have just fitted a new Jasco toilet, I purchased new sanitation hose from my local chandlers.
The 19mm hose from the seacock to the toilet and from the toilet to the vented loop were both easy to push onto the pump fittings ( I usually expect a fight) with one jubille clip on there was still a drip from the hose and 2 clips made it no better. The push onto the blakes sea cock felt tighter ( as I recall) and doesn't leak at all.
Of course I can probably bodge it with ptf tape but thsi seems wrong and the fitting from the sea cock is critical.
Can there be a different size of hose around?? I always assumed that 19mm was what you used on 3/4" fittings but have we gone metric and introduced a 20mm size.
When I bought the hose there was no bore diameter supplied.
 
Yes it's 19mm. Installations I've done it's a snug fit which I've facilitated by use of a heat gun into the pipe to soften up the plastic before pressing on to the fitting on the toilet. I'm guessing you've done this already but the second clip should be put on the opposite way round to the first so that you have the screw part of the second clip on the opposite side of the pipe to the first. Also, don't know if you're using a flathead screwdriver to tighten the clips but I find a 7mm socket and ratchet a lot more effective for getting them really tight
 
Hi

Are you sure the leak is from the hose and not running down onto the hose from the joker valve flange ? I had similar problem. Took the hose of time after time trying to fix what I thought was a leak on the hose connection before I found the real source of the leak.
 
The water can leak down the spiral with some hoses of this type. Some silicone sealant or similar during assembly should solve the problem.
 
As sandyman says, do be sure the leak is really where you think it is. I too have had problems with water coming from the seal between the toilet and the waste outlet elbow which can squirt upwards onto the inlet pipes making you think that's where the leak is on first glance. That problem can be associated with too much pressure on the outlet elbow when you've tried to squeeze the outlet pipe round too tight an angle to fit it on.
 
Thanks guys Is PCUK suggesting that the heating will make it tighter? There is certainly no need to warm it to get it on as its a fairy easy push on fit which is what worried me.
Joker valve??? you must be joking?? I will look but surely a new toilet wont leak? and as said I didn't like the 'pushing on' feel of the pipe.
Will try again!!
 
Just a final note on this. We used the boat for a proper cruise over the weekend and the problem was terrible. The hose joints all leaked and were usually worse with the jubilee clips on. We went to the chandlers with a fitting ( the vented loop) and a sample of the white hose as fitted ( we could see that this hose had become slightly oval by 'pinching up' with the jubilee clip. We found black hose in stock which was ribbed outside but smooth section inside this felt a much better fit to the fitting and even looked smaller in diameter. It seems like the white hose is ribbed inside as well and the 19mm diameter is just at the at the rib. I would be confident at re-plumbing using the black hose and, unless told by kind readers otherwise, plan to do so!!
I bought the white hose from my local chandlers as 19mm 'sanitation hose' and was told that "this is what you use on toilets" I wonder, now, about that advice?
 
Pcatterall... I have been wondering the same as you recently. Some of the 19mm spiral wound hose has definitely been larger than older 19mm spiral hose.

Recently bought some metal wire reinforced for the cooling water inlet. It was sold as 19mm internal diameter but was much closer to the European 20mm ID. Ended up using some fire resistant spiral hose... fits perfectly but at £25/m it needs to!

Regarding heat - perhaps the idea was just to soften the hose enough for the clamps to 'squish' it against the toilet fitting better as you tighten them whilst still hot (and not to expand the hose for fit).

Some hose is a better fit as you say.... Strange you can buy stainless clamps designed for spiral hose (where the grip is between the spirals) but nobody seems to use them..

See half way down this page for an example:-

http://www.spiralmfg.com/flex1f.htm
 
In addition, try ( not always easy) to arrange the hoses to be straight for say 50 mm where they attach to the toilets spigots, otherwise they will be attempting an oval distortion instead of circular cross section.
Silicone and not overtightening the jubillee clips usually sorts out even the tightest installation.

For what its worth I sikaflex all critical hoses, ''it just works''
 
Thanks guys, I really do believe that it is the hose that is 'at fault' here. The run before the fitting is quite straight and the 'ovalisation' seemed to be a function of too big a pipe which became 'squeezed up' into that shape because there was too much material there.
I will try the black stuff, we all thought the initial fit was much better.
Cheers
 
hose leaks

I don't use sanitation hose on the inlet side at all - no need as far as I know - just go for the clear reinforced type and it should be fine. Plenty of 19mm available.
 
My first thought was to be concerned at an easy fit - I renewed all my hose last year and they wouldn't go on without help from a hot air gun and some washing up liquid. Even a clip or two won't adequately tighten a hose that is too big IMO.

As said - sanitation hose not required for the inlet.
 
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