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Quick needle valve Q

Discussion in 'CO2 Enrichment' started by abcemorse, Oct 22, 2010.

  1. abcemorse

    abcemorse Prolific Poster

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    Does the Ideal needle valve fit the Milwaukee rig or do I need bushings?
     
  2. Left C

    Left C Lifetime Members

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    You will need some brass fittings.

    I don't own a Milwaukee regulator, but I have several Ideal 52-1-12 needle valves. They have female 1/8" NPT ports on each end which require male 1/8" NPT adapters at each end. The safe way to set it up is to use a 1/8" NPT check valve between the Milwaukee bubble counter and the Ideal needle valve. Between the solenoid and the Ideal needle valve, you can use a 1/8" NPT hex nipple. You can get one at Lowes, Home Depot or a plumbing supply.

    These are the ones at Lowes and Home Depot made by WATTS:
    [​IMG]
    No. 122 Hex Nipple
    122-2
    1⁄8" MIP Both Ends
    A-714

    You can get a male 1/8" NPT check valve from Clippard, Swagelok, Parker, eBay, etc. Get a low cracking pressure check valve.


    This wouldn't be my first choice, but it will work. Here is an eBay Clippard female 1/8" NPT check valve with a 1/2 psig cracking pressure. If you get this, you will need 3 of the 1/8" NPT hex nipples. Two will go on each side of the check valve and one will go between the solenoid and Ideal needle valve.
    http://cgi.ebay.com/Clippard-Minimatics-MJCV-1-Brass-1-8-CHECK-VALVE-/360309581155?pt=Pneumatic_Hydraulic_Valves_Parts&hash=item53e41fe563






    [​IMG]




    [​IMG]
     
  3. Matt F.

    Matt F. Lifetime Charter Member
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    my guess is you'd prob need a new jbj bubble counter, too. The nipple outlet for the gas in that milwaukee bubble counter is conneceted to the needle valve. You remove the needle valve and you have a gaping hole...no fine bubbles just a lump of gas escaping into the bubble counter from the new 1/8"npt fitting and the idea valve...
     
  4. darkoon

    darkoon Prolific Poster

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    I retrofitted Milwaukee setup by swapping out the stock regulator with a 2-stage harris and a swagelok low flow metering valve. Milwaukee needle vale is left alone because 1st, I wanted to minimize the changes/cost, 2nd it was a bit difficult to take off.

    [​IMG]

    Heemskn also swapped out the stock Milwaukee needle valve with a parker metering valve.
    here is his built.
    [​IMG]
     
    #4 darkoon, Oct 22, 2010
    Last edited by a moderator: Oct 22, 2010
  5. abcemorse

    abcemorse Prolific Poster

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    Cool, thanks for the replies, guys!! Helps a ton!
     
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