Malleable Union iron Flat Seat are wildly used in Oil and Gas system . As its good and tight seal. Malleable Union iron Flat Seat is different from than others malleable iron pipe fittings or Carbon steel Coupling, It seems like has magic . which can be connected with galvanized or Black pipe lines easier .it maybe have a relative with their special structure and dimensions .one Union consist of three parts, one is nut, one is female end and one is Male end, when the female and Male ends of the Black or Galvanized union are joined , the nut seals the joint by pressing the two ends together. then it is perfectly connection or installations Malleable union iron flat seat also have a supper advantages than the other PVC fittings or brass fittings or Coupling,it can be connected and disconnected multiple times if required and The galvanized or Black 330 union allows or has rooms for further disconnections of the galvanized pipes with threads end for maintenance,which are one of reasons for hot selling. Malleable iron Union Flat seat also can be joint with Rubber , Then it is a spherical rubber expansion joint new connectors.

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