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Scully compression unions

Hvac tech_2
Hvac tech_2 Member Posts: 21
Are scully compression unions code on fill and vent piping, customer got a cheaper quote using these for a tank changeout, I am not comfortable even using black unions


  • billtwocase
    billtwocase Member Posts: 2,385
    Compression couplings in Mass anyway, no. Iron unions are a rigid connection, and acceptable.