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  1. Marco Carrieri

    Gate Valve for Tie-in on existing Firewater ring

    Hello, I'm going to design a Tie-in on existing Firewater ring (in refinery area)between n.2 PIVs. I need to install a Gate Valve, only for tie-in purpose (valve will be locked open). Is this GATE VALVE needs UL/FM certification? Is written in some NFPA? Regards, Marco

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