IA - 2N 1/8 27.9 4.8 14.2 6500(447) 3200(220) IA - 4N 1/4 35.6 7.1 19.1 6600(454) 3300(227) IA - 6N 3/8 38.4 9.6 22.2 5300(365) 2600(179) IA - 8N 1/2 49.3 11.9 26.9 4900(337) 2400(165) IA - 12N 3/4 51.3 15.7 33.3 4600(316) 2300(158) IA - 16N 1 57.9 22.4 41.2 4400(303) 2200(151) Part Number ISO/BSP Pipe Size (ISO 228) NPT Pipe Size Dimension Pressure Ratings, psig(bar) A B C E H SS316, Steel Brass IA - 2G - 2N 1/8 1/8 25.1 7.1 13.7 4.1 14.2 6500(447) 3200(220) IA - 4G - 4N 1/4 1/4 33.5 11.2 18.0 5.8 19.1 6600(454) 3300(227) IA - 6G - 6N 3/8 3/8 35.8 11.2 21.6 7.9 22.2 5300(365) 2600(179) IA - 8G - 8N 1/2 1/2 44.2 14.2 25.9 11.9 26.9 4900(337) 2400(165) IA - 12G - 12N 3/4 3/4 48.0 15.7 32.0 15.7 33.3 4600(316) 2300(158) IA - 16G - 16N 1 1 53.3 18.3 38.9 19.8 41.2 4400(303) 2200(151)