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simple "needle" valve

PostPosted: Sun Apr 10, 2011 9:17 pm
by maheel
Saw this idea over on hd by "chickenfeet" and thought i would copy it's my rough prototype...

it's brass / teflon free

stainless bolt inside a bit of 1/4 inch tube. Bolt cuts it's own thread and seems to seal against low air pressure
1/4 tube has a hole in the side to allow flow from offtake tube

hoping to test a bit later tonight on the end of a run i am doing... :)

Re: simple "needle" valve

PostPosted: Sun Apr 10, 2011 9:35 pm
by MacStill
This is something I seen a while ago over there and thought is worth exploring, with the price of decent SS valves this will be a winner once perfected.

A 3/8 tee with a SS bolt in it would also work.

Re: simple "needle" valve

PostPosted: Sun Apr 10, 2011 9:39 pm
by maheel
McStill wrote:A 3/8 tee with a SS bolt in it would also work.


fark..... why didnt you tell me that earlier.... lol good idea !!

Re: simple "needle" valve

PostPosted: Sun Apr 10, 2011 10:14 pm
by MacStill
maheel wrote:
McStill wrote:A 3/8 tee with a SS bolt in it would also work.


fark..... why didnt you tell me that earlier.... lol good idea !!


Nah it was your idea, I just improved it :lol:

Re: simple "needle" valve

PostPosted: Mon Apr 11, 2011 10:19 am
by maheel
1st run was a fail ? not really sure what was going on.
testing on "untested" boka tube and it's about 11pm Sunday night....

still hot = yes
vapor in coloum = yes
condenser running = yes
reflux coming out = NO (only a little tiny drip or two)

trouble shoot :)

blow air up off-take hear it in column = no blockage
re-check reflux coming out = NO (only a little tiny drip or two)
take bolt right out = NO (only a little tiny drip or two)

start clutching at straws
unplug PSR-25 and go direct to power point
wrap towel around column for insulation
still nothing coming out ???

F#%$ M# where is that shit going.... i will fix you you $%#^
take pipe cutter and gloves, cut off "valve" with the expectation of hot high ABV pissing all over the place
nothing coming out F#$^$ F^$$ F^#$ whats going on ????
pour some heads down the top and it pours out the off take, F#%# whats going ON here !!!!

stand there scratching my head thinking WTF

F$^% it i cant be bothered... turn off still and go to bed.... sort this shit out another day

lol...

Re: simple "needle" valve

PostPosted: Mon Apr 11, 2011 1:04 pm
by reknaw
For me the next step would have been the grinder or the hammer :) Good call on going to bed and leaving it till the next day.

Re: simple "needle" valve

PostPosted: Sat Apr 16, 2011 6:01 pm
by MacStill
So maheel have we progressed any further with this yet?

Re: simple "needle" valve

PostPosted: Sat Apr 16, 2011 8:48 pm
by maheel
nahh been busy sanding and painting a deck and associated crap....

i put some neutral on woodchips today and saw it sitting on the bench.

will give it another try soonish.