Twin Seal Plug Valve Name  Twin Seal plug valve Size 1/2″ to 20″; DN15 to DN1500 Normal pressure Class 150LB to 2500LB; PN16 to PN420 Design standard API 599,API 6D,ASME B16.34; BS 5353 Marked MSS SP-25 Fire safe design API607,API 6FA End flange ANSI B 16.5,ASME B16.47; EN1092,DIN2543~DIN2547,AS2129 Screwed dimension ANSI B1.20.1; BS21;JIS BO20;JB/T 73.6 End flange ANSI […]