basic information size range DN15~200mm (1/2"~8") working pressure 150~600LB 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 ASME B16.10 End flange Std ASME B16.5 Test Standard API 598, API6D Material WCB, A105, CF8(304), CF8M(316) Operated way Manual, Gearcase, Pneumatic, Electric