basic information size range DN15~200mm (1/2"~8") working pressure 10K, 20K suitable temperature -29-250℃ Seat PTFE, PPL,RPTFE Suitable medium water, gas, oil CF8(304): suitable for nitric acid CF8M(316): suitable for acetic acid Technical Standard Design Standard ASME B16.34, API 608 Fireproof test API 607 4th 1993 Face to face standard JIS B2002 End flange Std JIS B2212~B213 Test Standard JIS B2003, API 6D Material WCB, CF8(304), CF8M(316) Operated way Manual, Gearcase, Pneumatic, Electric