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Re: [new_distillers] Re: More questions (was still design)

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  • Dick
    In message , mobrien@zoology.uq.edu.au writes ... I wouldn t have thought ¼ turn enough for fine control of reflux, mine has approx.
    Message 1 of 7 , Sep 8 12:10 PM
      In message <9nc9ot+kgni@...>, mobrien@...
      writes
      > Still can't find any needle valves around here - I did find one, but
      > it was rated at 5000psi, and cost $152, and I thought that was too
      > much!
      >
      > I found this online - is this the type I'm after?  Or isn't 1/4 turn
      > sensitive enough? I'm thinking that buying online might be the
      > easiest!
      I wouldn't have thought ¼ turn enough for fine control of reflux, mine
      has approx. 4 turns from full closed to full open. Have a look at the
      Radiospares/Electromail web site on http://rswww.com/, either do a search
      for 'plumbing, valve, needle' to see their selection or look at part # 262-0713.
      This is a foot mounting needle Vv. that takes a ¼" OD Cu pipe in & has a
      3/8" ID hose fitting on the output.
      Anyone whose had anything to do with electronics or radio/tv repair
      in uk over the past 50yrs will know of RS but they've now got a very good
      selection of reasonably priced (well for uk anyhow !) plumbing bits & pieces
      in stock - including 54mm T pieces, end caps & bends & AND THEY TAKE
      PLASTIC !!!!!!!!!! The needle Vv. was selling for UKP10.46 + tax + pp this
      morning.
      >
      --
      Dick
      Fra' Auld Reekie
    • mobrien@zoology.uq.edu.au
      Thanks for all the responses. After about 20 phone calls, I eventually found a place here in Australia that could get a 3/8 needle valve in for me. It ended
      Message 2 of 7 , Sep 11 11:54 PM
        Thanks for all the responses.

        After about 20 phone calls, I eventually found a place here in
        Australia that could get a 3/8 needle valve in for me. It ended up
        costing $25 and has a 3/8 female bsp thread either side. What that
        means is you can put whatever attachment you want either side - I've
        got a 3/8 compression fitting one side (to take the copper pipe) and
        a 'tube nipple' the other, that a plastic hose can slide onto.

        The place also has heaps of sizes in heaps of different fittings - I
        also got a combination of fittings that will allow a digital
        thermometer with a 3mm probe to be put into the top of the head, all
        with a compression fitting so it can easily be taken in and out.

        Anyway, now I have all the bits for the column - now I've just got to
        organise the boiler (Jan, expect a phone call soon!)

        Oh, the place I got the fittings is called:
        PIRTEK
        and is a hydraulic hose and fittings specialist - they are at Waycol
        in Brisbane.

        Thanks again,

        Matt
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