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Special application for gas control valve

Boilermik
Boilermik Member Posts: 9
in Domestic Hot Water

I developped an application for mobile hot water tank fired by propane burner . This obviously includes gas control valve. So no electricity is involved ( nor 110 V or 24 V) . But from local insurrance inspector I will need a LOW WATER CUT OFF ( lets say float type ) that will shut down the burner in case of low level .UNFORTUNATELY . i did not find any gas control valve with an auxiliary contact . Can any one help on this one ?

Regards

Mike

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 24,876

    Ah… let me get this straight. You have a gas control valve of some kind — let's say as it might be an outdoor grille — which takes no electricity to operate. That's great. But… if it takes no electricity to operate, of what use is any kind of contact? A gas valve with a solenoid — the usual kind — requires electricity to operate that solenoid, and all that is needed is for the low water cutoff (and the other safeties which I hope you have) to cut off the power.

    Am I confused?

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • retiredguy
    retiredguy Member Posts: 977

    Show us a few pictures, so we can get a better understanding of what you have.

  • ratio
    ratio Member Posts: 3,791
    edited September 4

    Perhaps https://www.supplyhouse.com/Field-Controls-TCA-1-Thermocouple-Adapter-for-30-millivolt-Gas-Valve is what you're looking for?

    mattmia2Larry Weingarten
  • mattmia2
    mattmia2 Member Posts: 10,955

    use a millivolt valve and put the safety in the control chain for the valve. will have to use a float type lwco

  • mattmia2
    mattmia2 Member Posts: 10,955

    although that will also kill the pilot in most applications which could be an issue if the float bounces or some other transient thing trips the lwco.

  • Boilermik
    Boilermik Member Posts: 9
    https://forum.heatinghelp.com/discussion/comment/1809361#Comment_1809361

    there is no electricity involved in the process . So there is no possibilty for gas solenid valve

  • Boilermik
    Boilermik Member Posts: 9

    Thanks for help but NO, I cannot provide auxiliary LWCO contact from this device

    mattmia2
  • Boilermik
    Boilermik Member Posts: 9

    Exactly what I want to do . But I did not find any milivolt valve that allows that

  • Boilermik
    Boilermik Member Posts: 9

    It does not matter . The user will have to start back the heater and keep on working . Not an issue for me

  • Boilermik
    Boilermik Member Posts: 9
    robertshaw gas valve images.jpg

  • Boilermik
    Boilermik Member Posts: 9

    similar valve type but with auxiliary contact to connect LWCO float and/ or remote start push button

  • Boilermik
    Boilermik Member Posts: 9

    Exactly what I want to do . But I did not find any milivolt valve that allows that

  • ratio
    ratio Member Posts: 3,791

    You can interrupt the thermopile on any valve, just make sure your LWCO contacts are reliable at the millivolt range. Something like: https://customer.resideo.com/en-US/Pages/Product.aspx?cat=HonECC+Catalog&pid=WT8840B1000/U&category=&rank=&v1=Sort.1.Product.Rank&asc=1

    mattmia2
  • Boilermik
    Boilermik Member Posts: 9
    https://forum.heatinghelp.com/discussion/comment/1809613#Comment_1809613

    Thanks !!! , sound we are on a good track . I will look at the bulletin and report if this could be our solution

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