Re: [new_distillers] More questions (was still design)
- 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
> 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
> 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
> 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
> and copper can be soldered together?
> Thanks again.
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Dick on the LangWang
Dedicated to Growing Old Disgracefully
- 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
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
> I found this online - is this the type I'm after?any of these at
look good. Great prices too ! US$2 - US$3. I've just priced the same thing here at NZ$28 (US$12)
- In message <9nc9ot+kgni@...>, mobrien@...
> Still can't find any needle valves around here - I did find one, butI wouldn't have thought ¼ turn enough for fine control of reflux, mine
> it was rated at 5000psi, and cost $152, and I thought that was too
> 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
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
Fra' Auld Reekie
- 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:
and is a hydraulic hose and fittings specialist - they are at Waycol