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Zoomup's pipes

Chris Pearson

Hived off from the electrical section.

Pitch believed to be 1.5mm.

Z

Pictures. I had to saw through the pipes to get a socket onto the fittings to get them to turn for removal. They were rusted onto the steel pipes

  • in reply to mapj1


    OK I thought it would be a re-entrant flare, so that the O ring is cupped and seals to the side of the pipe and to a step at the bottom of the threaded hole it screws into so that the thread and the gap between the bolt and the tube is dry/open to air, but the flare and all the pipe to the right of the ring is wet.  I would not have imagined a double fold on the tube but you may well be right OM.
    So zoom are either of us right, or all wrong ?

  • The copper fitting picture I posted earlier is a tap connector, something I have often seen and used. So I recognised the curve on Z's fitting. I think Z needs to take the fitting apart using WD40 and holding the flange edge in mole grips, then turning the hex nut. Once loosened I think a 8mm brass compression plumbing fitting can just about be used to join the two cut ends of pipe back together, then the fitting remade into the housing. I think it is the only solution, despite dis-similar metals

  • in reply to OlympusMons

    If that is the case, how does the o-ring contribute to the seal.

    I am not sure that I agree with Mike's interpretation either.

  • in reply to OlympusMons
    OlympusMons said:
    I think it is the only solution, despite dis-similar metals

    There is also the possibility of making adapters and then using standard flares and tube nuts.

  • in reply to Chris Pearson

    The o-ring sits between the pipe and the parallel part of the housing. It is a backup to the flare seal.

    I made the flare a bit wider in my drawing, apologies.

  • Those are standard hydraulic fittings Z, go to a hydraulic hose maker (yellow pages or web). There is Powertran (Newtonards) across the water near Belfast who will make replacement assemblies. Very helpful. BTW they have been bodged once already, flare fittings do not have those O rings, it looks like you need help from Graham at Powertran!

  • in reply to David Stone

    These American fittings do seem to include o-rings. As posted by kfh:

    Is what is wanted similar to one of these  

    https://www.autozone.com/fittings-and-hose-line-connectors/power-steering-adapter-fitting/p/duralast-18mm-flare-straight-fitting/83904_0_0

    I am sure they are available over here

    Edit, got confused should have posted to Zooms pipes. I blame old age.

  • Now we have the correct picture of the ends, and yes those type do have an O ring but not either of Zooms ends! There should be a solid shoulder of the O ring diameter, and this should match the mating hole inside diameter below the thread. These "flares" are made with a special tool and press, NOT the usual brake pipe type, and this needs a very considerable force, Grahams is hydraulic. I have also seen these ends ready made to standard hydraulic fittings for the repair market, then you can just use a length of flexible hydraulic pipe to connect up.

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