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

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  • Tony & Elle Ackland
    Matt, ... The control with a gate valve will probably be too coarse - not give you the precision you need. Check with plumbing suppliers, hydroponics
    Message 1 of 7 , Sep 6, 2001
      Matt,

      > The closest I can find is a brass gate valve - would this
      > do instead?

      The control with a gate valve will probably be too coarse - not give you
      the precision you need. Check with plumbing suppliers, hydroponics
      suppliers, refridgeration dudes, etc

      > Secondly, are there any problems with having brass in the column? I am
      > planning on putting a male/female screw fitting between the head and the
      > column, so the head can be removed, and the only way I seem to be able to
      do
      > this is with two brass tube bushes. Any problems with that? I assume
      brass
      > and copper can be soldered together?

      I have a wee bit of brass in mine. It is reported as corrosion resistant
      to alcohol. For more information about using Brass, see
      http://www.brewinfo.com/mybrewery97/mybrewery3.html

      Tony
    • Dick
      Hi Mathew, I think you ll find that a gate valve won t give you as fine a control over reflux as a needle valve will - especially when it s just about closed.
      Message 2 of 7 , Sep 7, 2001
        Hi Mathew,
        I think you'll find that a gate valve won't give you as fine a control
        over reflux as a needle valve will - especially when it's just about closed. A
        gate valve is basically an on/off device whilst a needle valve is continuously
        adjustable over it's whole range.
        If you get stuck and can't find an au/nz supplier get back to me, I
        know of at least 1 uk supplier who will supply & ship anywhere at the wave
        of a plastic card.
        Don't know if brass has different properties when you're up-side-
        down but in uk I've never had any problems soldering the two together !! It's
        good soldering practise anyhow but just make sure both surfaces are clean,
        use a good flux and enough heat - solder should then flow round the joint
        like sheer magic .............

        > Hi again everyone,
        >
        > You may recall I am currently building a still, and have been asking lots
        > of
        > questions!  Sorry - but heres some more!
        >
        > I've just been going around the place getting the bits and pieces I need,
        > and have run into trouble trying to get a needle valve for the spirit
        > outlet.  This is what is detailed in the plans, but no-one has been able to
        > get one for me.  The closest I can find is a brass gate valve - would this
        > do instead?  (I'm guessing so, but thought that I would check)  I'd put
        > that
        > onto the outlet pipe using brass compression fittings - does the plastic
        > inside the compression fittings react with alcohol?
        >
        > Secondly, are there any problems with having brass in the column?  I am
        > planning on putting a male/female screw fitting between the head and
        > the
        > column, so the head can be removed, and the only way I seem to be
        > able to do
        > this is with two brass tube bushes.  Any problems with that?  I assume
        > brass
        > and copper can be soldered together?
        >
        > Thanks again.
        >
        > Matt
        >
        >
        >
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        --
        Dick on the LangWang
        Dedicated to Growing Old Disgracefully
      • mobrien@zoology.uq.edu.au
        Thanks TOny and Dick, 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
        Message 3 of 7 , Sep 7, 2001
          Thanks TOny and Dick,

          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!

          <http://www.cornerhardware.com/hardware/iteminfo.pl?
          action=iteminfo&item=719852928027>

          Matt
        • Tony & Elle Ackland
          Matt ... any of these at http://www.cornerhardware.com/cgi-bin/search.pl?cat_id=4&qstring=needle&count=7 look good. Great prices too ! US$2 - US$3. I ve just
          Message 4 of 7 , Sep 8, 2001
            Matt

            > I found this online - is this the type I'm after?

            any of these at
            http://www.cornerhardware.com/cgi-bin/search.pl?cat_id=4&qstring=needle&count=7
            look good. Great prices too ! US$2 - US$3. I've just priced the same thing here at NZ$28 (US$12)

            Tony
          • 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 5 of 7 , Sep 8, 2001
              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 6 of 7 , Sep 11, 2001
                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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