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Oxygen solenoid valve suggestions

Discussion in 'Compressors, Boosters and Blending Systems' started by lastfrontier, Sep 2, 2020.

  1. lastfrontier

    lastfrontier Angel Fish

    # of Dives: 50 - 99
    Location: Alaska
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    I am working on building a nitrox blending setup. I would like to incorporate a solenoid valve to shut off the flow of oxygen should the compressor stop unexpectedly. I have searched the forum but can't seem to find much discussion about what to look for when buying a solenoid valve for this purpose.

    I found a couple of candidates but thought I would ask here to see if I am on the right track.

    1/4" Stainless Steel Solenoid Valve

    U.S. Solid Electric Solenoid Valve- 1/4" 24V DC Solenoid Valve Stainless Steel Body Normally Closed, VITON SEAL

    Thanks in advance.
     
  2. RayfromTX

    RayfromTX Student Of Gas Mixology Staff Member ScubaBoard Sponsor

    # of Dives: 200 - 499
    Location: Hill Country of Central TX
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    1B79D3D0-DC01-47A2-8998-D4285356017D.jpeg perhaps this will help
     
    lastfrontier and rjack321 like this.
  3. tbone1004

    tbone1004 Technical Instructor ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
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    the easiest way to do it is with a normally closed solenoid that is run from the same voltage as your compressor. Tie it to one of the motor leads and that way whenever the motor is running, it will open, as soon as the motor stops, it closes.
    The first one has multiple coil voltages and since most compressors are 240vac, you'll want that one
     
  4. Miyaru

    Miyaru Tec Instructor ScubaBoard Sponsor

    # of Dives: 2,500 - 4,999
    Location: EU
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    Stainless Steel and viton or EPDM, normal closed. And to be sure, remove the coil and do a sonic clean in blue gold.
     
    lastfrontier likes this.
  5. tbone1004

    tbone1004 Technical Instructor ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
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    all except normally closed is a benefit, but not necessary. This is low pressure oxygen, no different than regulator second stages, there is no need to O2 clean them
     
    lastfrontier, rjack321 and RayfromTX like this.
  6. rddvet

    rddvet DIR Practitioner

    # of Dives: 50 - 99
    Location: Florida
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    lastfrontier and RayfromTX like this.

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