... 2"~12" 1.0/1.6/2.0/2.5MPa PTFE liner ring inside, corrosion resistant. ISO, API, ASTM, ... ANSI, DIN, BS,JIS Wafer Type Fluorine Lined Butterfly Valve:Features:1) Working Temperature: -15~150*C2 ... , Stainless Steel+EPDMStem: SS316, Stainless Steel.Seat: PTFE, NBR.Bushing: PTFE, Bronze.O-Ring: EPDM, Fluorine RubberStandard:1) ... , BS5155.5) Test&Check: API598. Wafer Type PTFE Lined Butterfly Valve