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5 comments

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    Chia-ching Yang

    It is a union. I saw it in AGS student edition plumbing diagrams. 

     

     

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    Allen Azarkian

    its actually 3 Horizontal (not vertical) lines and all the same length, but thank you. searched everywhere but cant find  

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    Christie Bell

    I think it might be “coupling” which is similar but different than a union - couplings are a more permanent connection that are welded together and unions are held together with nuts for areas that need periodic maintenance.

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    YUE QIN

    Expansion Joint. You could refer this diagram on MEEB 

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    Sofia Salvat Mere

    Allen Azarkian it is an expansion joint, You can also reference Architectural Graphic Standards.

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