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Replacing my Old CO2 Regulator

Discussion in 'CO2 Enrichment' started by inkslinger, Aug 13, 2011.

  1. inkslinger

    inkslinger Guru Class Expert

    Dec 15, 2007
    Likes Received:
    Local Time:
    12:25 PM
    View attachment 2544 View attachment 2545

    I am going to replace my co2 3m Regulator with a Smith 30-100 CO2 Regulator , I replace my solenoid with a Burkert 6011 1/8in port and would like to keep my old bubble counter and needle valve. I need to find the parts number for a in-line brass check valve parts list from Clippard for my co2 hose .
    Does any one know what size of a reducer will be needed for the Smith Regulator? and a check valve between my needle valve and bubble counter {needle valve is male end and bubble counter is female end all in 1/8in ports}

  2. Left C

    Left C Lifetime Members

    Sep 26, 2005
    Likes Received:
    Local Time:
    12:25 PM
    Hi ink!

    That's a $100 medium duty single stage regulator. You can get a very nice two stage regulator for less than this. Smith 30-100:

    two stage regulators
    new Concoa 312:
    new Victor HPT270:
    used AirGas:

    What are you thinking? You are just throwing your money away. Unless something is bad with your 3M, you should keep it. You aren't going to be any better off with that Smith regulator.

    Do you like the 3M needle valve? Why not replace it with an Ideal? (or a Swagelok or Parker metering valve) That's a good solenoid, BTY.

    Can do. You'll need the check valve plus the barbed fittings. The multi-barb fitting comes with the gasket and the single barb fitting doesn't. You'll have to order the gaskets separately if you get the single barb fitting.
    MCV-1BB: check valve with female #10-32 ports -

    Does your CO2 tubing have an 1/8" ID? If so, here are some choices of barbs for use with the MCV-1BB check valve.Note that you will need the gasket too.
    multi-barb - 11752-1-PKG (gasket included):
    single barb - 11752-4-PKG (gasket is not included):
    gasket - 11761-2-PKG:

    As far as I know, that regulator has a 1/4" NPT port.

    1/4" male NPT x 1/8" female NPT - Clippard part: 4CQN

    You'll need a nipple with the above part. This is also listed below. So, get 2 if you use the Clippard 4CQN and the check valve combination below.
    Brass Pipe Fitting, Hex Nipple, 1/8 in. Male NPT - B-2-HN:


    You will not need an extra nipple if you use this reducing nipple.
    Brass Pipe Fitting, Hex Reducing Nipple, 1/4 in. Male NPT x 1/8 in. Male NPT - B-4-HRN-2:

    There are different ways to do this.

    Male check valve with an adapter.
    Brass Poppet Check Valve, Fixed Pressure, 1/8 in. MNPT, 1/3 psig (0.03 bar) - B-2C2-1/3:
    Brass Pipe Fitting, Adapter, 1/8 in. Female NPT x 1/8 in. Male NPT - B-2-A:

    Female check valve plus a nipple.
    Brass Poppet Check Valve, Fixed Pressure, 1/8 in. FNPT, 1/3 psig (0.03 bar) - B-2C4-1/3:
    Brass Pipe Fitting, Hex Nipple, 1/8 in. Male NPT - B-2-HN:

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