20 صفحه pdfASME B16.38:2012Large Metallic Valves for Gas DistributionManually Operated, NPS 2 1/2 (DN 65) to NPS 12 (DN 300), 125 psig (8.6 bar) Maximum
20 صفحه pdfASME B16.38:2012Large Metallic Valves for Gas DistributionManually Operated, NPS 2 1/2 (DN 65) to NPS 12 (DN 300), 125 psig (8.6 bar) Maximum