Cock Valve shape and size differences (Kayen/Tilley)

Discussion in 'Pressure Lamp Discussion Forum' started by Kiwiboy00, Nov 2, 2019.

  1. Kiwiboy00

    Kiwiboy00 Subscriber

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    Can someone please tell me why are these two cocks different. One is taller then the other and if you look at the bottom rims both are different in thickness and roundness.... Why ?

    EADEBCBF-CA99-4397-A9FC-4E077CBDE76C.jpeg 88582B1F-C6BE-4541-9A68-CA2523FA2EA9.jpeg
     
    Last edited by a moderator: Nov 2, 2019
  2. Anthony

    Anthony Australia Subscriber

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    Andrew, this is something I have wondered about many times.
    Depending how meticulous I get, I could find more than a dozen varieties.

    All I can come up with is that some are Tilley and some are Kayen.
    I have no idea which is which.
     
  3. Anthony

    Anthony Australia Subscriber

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    Sorry @Kiwiboy00 for calling you Andrew.
    I went back to the wrong post. :roll:](*,)
     
  4. ColinG

    ColinG United Kingdom Subscriber

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    Just an idea but what if this was the first job they gave new machinists on the shop floor - something they couldn't mess up too bad. Either that or they get shorter over time and this was another cost cutting exercise.
     
  5. Kiwiboy00

    Kiwiboy00 Subscriber

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    All good buddy :lol:
     
  6. Kiwiboy00

    Kiwiboy00 Subscriber

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    Who knows could be. Hopefully there is someone on this forum who might have a bit more information and has the answers. Colin your answer could be plausible.
     
  7. Kiwiboy00

    Kiwiboy00 Subscriber

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    Tony press would you know ?
     
  8. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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  9. Tony Press

    Tony Press Australia Subscriber

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    Tony Press knows only that the Kayen and Tilley control cocks look very similar. If you know what knob was on the cock that helps (sometimes).

    The Tilley control cocks of each different type should be consistent in their dimensions. If you have an odd sized one, it could be Kayen.

    I’ll look at my Kayens later and see if any pattern emerges. But my opinion is that if @Anthony can’t tell the difference, no one can...

    Cheers

    Tony
     
  10. Tony Press

    Tony Press Australia Subscriber

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    Darren

    The closest control cock I’ve found to the left hand side one in your photos is this:

    61A7FCBD-B84E-4ACB-BE7C-0A60655DA85A.jpeg

    This was not attached to a lamp.

    The odd thing about it is the diagonal knurling that I’ve not seen on other control cocks; and the tapered filter cup at the bottom...

    Cheers

    Tony

    @Kiwiboy00 @JEFF JOHNSON @Mackburner @Henry Plews @Anthony
     
  11. Kiwiboy00

    Kiwiboy00 Subscriber

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    Thankyou Anthony - ColinG - Jeff Johnson - Tony Press...... Appreciate everyone’s input.

    I was told this by another collector that the one with the wider band on the bottom will be a KayeN.

    The shorter band one is a Tilley.

    Kind Regards
    Darren
     
  12. Tony Press

    Tony Press Australia Subscriber

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    That may well be the case for that particular style (ie wide band at the bottom), but there are plenty of Kayen lamps with control cocks that look the same as the brass knobbed Tilley ones.

    Cheers

    Tony
     
  13. Kiwiboy00

    Kiwiboy00 Subscriber

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    Cheers Tony, out of 24 cocks that i brought from Jim only 2 looked like this. Plenty of them had the black plastic tilley knobs, about 8 were brass ones instead of plastic with different knurling patterns.

    Cheers
    Darren
     
  14. ROBBO55

    ROBBO55 Subscriber

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    @Kiwiboy00

    I have this cock on a Kayen H7 table lamp manufactured by Nettleford

    overall length 39mm (exc the filter cap)

    cock.jpg
     
  15. Tony Press

    Tony Press Australia Subscriber

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    Thanks, Martin.

    More of that diagonal knurling, and the different filter cup (but this time with traditional Kayen diamond knurling.


    Cheers

    Tony

    @ROBBO55
     
  16. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    It's new to me.
     
  17. Tony Press

    Tony Press Australia Subscriber

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    The diamond knurling on the vapouriser makes it (the vapouriser) a Kayen.

    Cheers

    Tony
     
  18. Nils Stephenson

    Nils Stephenson Founder Member

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    That is identical to the one I have on my Nettlefold H7.

    All my Kopsen fittings have the thin lower rim like the one on the right in the original pictures.
     
  19. Anthony

    Anthony Australia Subscriber

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    @Kiwiboy00 ,I suspect the 2 gland nuts will not be interchangeable with those control cocks.
     
    Last edited: Nov 5, 2019
  20. Anthony

    Anthony Australia Subscriber

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    Either will the filter nuts be interchangeable.
     
  21. Kiwiboy00

    Kiwiboy00 Subscriber

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    Thanks again guys you all have been an amazing help. Ive put these 2 aside to fit to my Kayens. Sorry for the late reply works been crazy busy, all work and no play.

    Kind Regards
    Darren
     
  22. ROBBO55

    ROBBO55 Subscriber

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    Thanks Tony, I hadn't taken much notice of the knurling.
    Good to know.

    I haven't fettled this one yet.

    20191106_081333.jpg

    The cock with the wider rim is also shown on this Nettlefold in the reference gallery Kayen HL7 (Nettlefold)
     

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