Class 300 black malleable union fittings are UL listed. NPT threads conform to ASME B1.20.1. Conforms to ASTM A197, ASME B16.39 and ASME B16.3.
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Product Manual (PDF Download)
Service Metal Series XBU Class 300 Black Malleable Iron 3 in. Unions
Class 300 black malleable union fittings are UL listed. NPT threads conform to ASME B1.20.1. Conforms to ASTM A197, ASME B16.39 and ASME B16.3.
Product Manual (PDF Download)
