Valve on scba tank

Forums Air Tanks, Pumps, & Compressors Valve on scba tank

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    bigbobbybeef
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    WHen you put a valve on a scba tank there is an O ring do you put teflon tape on the threads also ?

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    Diamondback
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    I saw a tutorial somewhere, and they did not use anything on the valve to tank union, except for an oring.

    They did use a type of anti seize paste or jell on other internal threaded parts of the valve.

    I tried looking for the video & can’t find it. Maybe they were wrong & took it down?

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    dallin
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    I only used the O ring

     

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    SkyCool
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    Anytime there is an O-ring or compression fitting no Teflon is needed. 

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    Centercut
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    Just an o-ring. Hand tight plus a quarter turn. Don’t overtighten!

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    bigbobbybeef
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    i watched a video he put a minute amount of grease the amount of the size of a pin head. I bought a chinese tank came in today the valve came in 4 days ago the tank today. Thank you

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    roscodog01
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    ..i watched a video he put a minute amount of grease the amount of the size of a pin head. I bought a chinese tank came in today the valve came in 4 days ago the tank today. Thank you

    Its not Grease, its TFE paste, used teflon tape for fluids and teflon paste for high pressure gasses… 

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    Humdinger
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    bigbobbybeef

    WHen you put a valve on a scba tank there is an O ring do you put teflon tape on the threads also ?

    The O-ring alone will provide the necessary air seal for your tank valve.  There is no need for TFE tape which is a sealant.. I recommend a light coating of silicone grease on the valve threads to assist in unscrewing the valve for inspection at a later date.  The O-ring seal under a very small amount of air pressure in a tank makes it stay on incredibly tight.  Dry threads can seize over extended periods and are a PITA to loosen for removal.

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    Centercut
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    I’ll second that @humdinger. Last tank I took to dive shop to get hydro’d they strapped the tank into the tank vise and needed a 4 foot cheater bar on the wrench to break loose the valve. I thought they were going to rip the valve right off the tank. So definitely use some silicon grease as anti-seize on the threads when you put it back together. 

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