high pressure during cut off

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Gilbertd
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Re: high pressure during cut off

#21 Post by Gilbertd » Tue Nov 17, 2020 9:36 pm

Looks to me like the bottom union is cross threaded so not screwing in fully. It looks to be at an angle and there's far more thread showing than on the top one. The connector you link to is for orange hose, vapour hose used to connect a Propane cylinder to your barbecue or patio heater. Intended for vapour not liquid at 10 bar.
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mgrover
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Re: high pressure during cut off

#22 Post by mgrover » Wed Nov 18, 2020 8:34 am

indeed, i will be getting this to marry them

https://www.lpgshop.co.uk/farotypeo88mm ... gxwM_aUVvM

also dunno if the lpg installers know but theres also a FB group thats pretty active if they want to ply their trade there.

LPGC
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Re: high pressure during cut off

#23 Post by LPGC » Wed Nov 18, 2020 10:05 am

I would have advised using 1 of the inline Faro to Faro connectors you linked to in your last post. You could use 2 to extend the pipe without touching the existing ends of pipe, or 1 if the pipe is long enough without extending, or 1 if it's not long enough so you need to extend but you don't mind re-making connections at the reducer end.

But the fittings you have should work if not cross-threaded. Sometimes if you cross thread a pipe-nut it deforms the olive.
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Brian_H
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Re: high pressure during cut off

#24 Post by Brian_H » Wed Nov 18, 2020 6:04 pm

If you can't locate which bit is leaking, then some soapy water will narrow it down, as above, the faro to faro joiner would be much neater (I did try finding a 90 degree elblow last night in that setup but couldn't, if it doesn't need to be an elbow that would be much easier).

The faro connectors can also be reused much more easily than the copper ends for them, you can reuse the copper ends if you can get them to seal, or get the olive off and replace it if needed. As said what you have should work, but doesn't look quite right in the photos, is it possible any debris has got caught where the olive sits (you should be able to get away with undoing it to check, best to depressurise it first though)

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Re: high pressure during cut off

#25 Post by Brian_H » Wed Nov 18, 2020 6:06 pm

Other thing I meant to say above - is it Faro branded pipe your using, or someone elses brand?. They differ slightly, and that might be the source of your leak as well.

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Re: high pressure during cut off

#26 Post by mgrover » Wed Nov 18, 2020 8:47 pm

It's some other type pipe I think.

I've probably cross threaded it tbh, I'll saw the olives off both sides, fit fresh connectors and olives and be gentle this time :lol: think I rushed a bit too much in my excitement :p

Gilbertd
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Re: high pressure during cut off

#27 Post by Gilbertd » Wed Nov 18, 2020 9:16 pm

It isn't the side with the olive, it's the male to male threaded bit that is screwed into the elbow that appears to be cross threaded. It's probably easier to see on your picture than it is when looking down on it but there's far more thread showing on the lower one than the upper one.
96 Saab 900XS, AEB Leo, sold
93 Range Rover 4.2LSE, Lovato LovEco, sold
97 Range Rover 4.0SE, multipoint, sold
98 Ex-Police Range Rover 4.0, AEB Leo, daily motor
96 Range Rover 4.6HSE Ascot, AEB Leo, my spare


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Brian_H
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Re: high pressure during cut off

#28 Post by Brian_H » Wed Nov 18, 2020 9:39 pm

Before you pull it apart, test it with soapy water. Bubbles will show you where the problem is, then you can leave the bits that are ok alone. The bottom one in your photo as said above, looks skewed. This may be a sign that the joiner itself is not of the best quality rather than it being cross threaded.

The bit you posted above if it will fit into the gap, should sort the issue anyway, There is an olive on either end of the convertor, the one on the copper end is the one I'd suspect to be where your problem is (not the split one that holds the poly pipe).

Brand wise Faro is probabbly the most common pipe, but whichever one it happens to be should be marked on it. As long as you can't see any leaks using the soapy water method from the larger end of the adaptor, you should be fine with the adaptors you are using.

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Re: high pressure during cut off

#29 Post by mgrover » Thu Nov 19, 2020 11:08 am

Brian_H wrote:
Wed Nov 18, 2020 9:39 pm
Before you pull it apart, test it with soapy water. Bubbles will show you where the problem is, then you can leave the bits that are ok alone. The bottom one in your photo as said above, looks skewed. This may be a sign that the joiner itself is not of the best quality rather than it being cross threaded.

The bit you posted above if it will fit into the gap, should sort the issue anyway, There is an olive on either end of the convertor, the one on the copper end is the one I'd suspect to be where your problem is (not the split one that holds the poly pipe).

Brand wise Faro is probabbly the most common pipe, but whichever one it happens to be should be marked on it. As long as you can't see any leaks using the soapy water method from the larger end of the adaptor, you should be fine with the adaptors you are using.
i can actually see the leak :P like if i swap to lpg and open the bonnet its leaking out haha

My pipe says, "Transfer Oil - LPG Automotive Class" on it. Is that Faro?

Brian_H
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Re: high pressure during cut off

#30 Post by Brian_H » Thu Nov 19, 2020 9:06 pm

Doesn't sound like it, but if you can see it where does it come out? The above highlighted threaded joint, or somewhere else?

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Re: high pressure during cut off

#31 Post by LPGC » Fri Nov 20, 2020 9:30 am

Some Faro pipe does have 'transfer oil' written on it, still the correct stuff for use with LPG, has 'Lpg' written further along it's length.
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mgrover
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Re: high pressure during cut off

#32 Post by mgrover » Sat Nov 21, 2020 6:19 pm

its fine, the connection worked, no leaks, love it. all seems well, no overpressure situation.i doubt it was my reducer thats damaged tbh. and we're about to find out because am going to use the spare reducer to have a dual reducer setup.
cant seem to keep a consistent 1.3/1.4 bar pressure with one.

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