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  1. sdengr

    UL508A and Pneumatics

    Has anyone run across any issues UL Listing a NEMA 4 panel with pneumatic fittings? Our UL guy seems to believe that the bulkhead fittings need to be NEMA 4 rated, but I've check around and do not believe these exist. Its for a SOV panel with 24 valves in it going out to two position valves...

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