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Using a threaded Union in C1D2 location?

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    Using a threaded Union in C1D2 location?

    Is it ok?

    Does it have to be explosionproof? Or is regular union ok?
    There will be seal-offs on either side of this C1D2 location.
    This is for an above ground storage tank for gasoline.

    Code gets a little confusing and I don't have a lot of experience dealing with classified location. If you have suggestions can you give a code reference so I can learn a bit about this stuff.

    Thanks!

    #2
    Class I, Division 2 does not require explosion proof conduit fittings, except between an enclosure that is required to be explosion proof and the sealing fitting.
    Don, Illinois
    (All code citations are 2017 unless otherwise noted)

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