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Thread: Nat Gas Safety Shut Off??

  1. #1
    DIY Senior Member Murphy625's Avatar
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    Default Nat Gas Safety Shut Off??

    Hi all,

    I have a question about the valves used on residential natural gas lines. It would seem that every residential home I have ever been in has these little red-handled gas valves in front of every appliance connection point.
    They look like this:
    http://www.pexuniverse.com/store/cat...as-ball-valves

    Is there any problem with just using a normal every day brass ball valve like one of these:
    http://www.pexuniverse.com/store/cat...l-valves-c-x-c

    The ball valves say 600 WOG (water oil gas) on one side and "1/2 PSI" on the other. (I'm not familiar with the 1/2 PSI designation)

    Must I use the little valves with the red handles or can I just use a regular full port ball valve?

  2. #2
    DIY Senior Member Murphy625's Avatar
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    Quote Originally Posted by DonL View Post
    Both valves may work but the correct one is the Gas Valve.
    Well that's not a very specific answer.. I was hoping for something a bit more definitive. (prepare for attitude ) Its natural gas, it kills people, it blows homes up... the 600 WOG valve is either the right one or it isn't.

  3. #3
    DIY Senior Member Murphy625's Avatar
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    Huh?
    Where did DonL post go??

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    Jack of all trades DonL's Avatar
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    Maybe someone can give you you a better answer.

    Gas is nothing to play with.

    Why not just use the proper gas valve ?

    I guess I do not get it.

    Are you wanting to use the valve on a Main gas line or a appliance ?


    Don't blow yourself up.
    Last edited by DonL; 09-26-2013 at 09:47 AM.
    Theory only works perfect in a vacuum.

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  5. #5
    DIY Senior Member Murphy625's Avatar
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    I do not like having to purchase things when I already have suitable items available. Since I have a dozen or so brass 600 WOG brass ball valves, I don't see a reason to go buy another valve.. I've used them on 5 PSI lines that I plumbed to a large industrial oven.. I know they'll work.. the question is, is it up to code..

    I already have a 1 inch full port brass ball valve on the main line to isolate the section I am working on. My question is in regard to a safety shut off valve at the new power-vented water heater.

    I am 99% sure it would pass any inspection but I just want clarification to be sure.. I see no engineering reason why it wouldn't be appropriate but that 1% is where code does not always jive with logic.

    Anyone??

  6. #6
    Jack of all trades DonL's Avatar
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    You should look in your appliance manual, It will most likely tell the proper shutoff to use.

    If it states something like;

    1/2 psi for indoor appliance connections per ANSI Z21.15 and CSA 9.1, 5 psi for indoor shutoff per CGA 91-002 and ASME B16.44 .

    Then it will need to be rated as per them standards.

    If you use the wrong valve, then it will be the inspectors call on whether to pass it or not.


    Good Luck.
    Theory only works perfect in a vacuum.

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  7. #7
    Moderator & Master Plumber hj's Avatar
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    The "wog" stamping means for liquid gas. A natural gas valve should have an AGA certification, although ball valves are often used.
    Licensed residential and commercial plumber

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    DIY Senior Member Murphy625's Avatar
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    Quote Originally Posted by hj View Post
    The "wog" stamping means for liquid gas. A natural gas valve should have an AGA certification, although ball valves are often used.
    So will the ball valve pass code?

  9. #9
    Jack of all trades DonL's Avatar
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    Quote Originally Posted by Murphy625 View Post
    So will the ball valve pass code?

    That is a answer that your local inspector needs to answer. Or it will just be a guess.

    Depends if you buy lunch.

    I will repeat;

    "If you use the wrong valve, then it will be the inspectors call on whether to pass it or not."

    Is that to hard to understand ? If I am wrong please correct me.

    What is Murphy's Law ? They are both ball valves with different ratings.

    Just do it because you know that you want to, Just to save a few bucks. And it will work.

    Sometimes a shutoff is not required, If the appliance has a way to shut gas off without removing a cover.

    Checking YOUR local code will give you a clue. I know I can not. lol

    Murphy's Law has always worked against me.


    Good Luck.
    Last edited by DonL; 09-30-2013 at 10:37 AM.
    Theory only works perfect in a vacuum.

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