Cap Fitting; Type Round Head; Nominal Size 1/2 Inch; Material Malleable Iron; Material Specification ASTM A197/A197M; Finish Black; Pressure Rating Class 150; Applicable Standard ASME B1.20.1/B16.3/B16.14, CRN, IAPMO, UPC (Canada and US), FM, UL (Canada and US), ISO 9001/14001; Overall Length 22.1 Millimeter