lug type butterfly valve Valve Design: MASS SP-67 for Casting steel, API609+ANSI B16.1 for DI/CI Flange: ANSI B16.1 Class 125, DIN2501 PN10/16; BS4504 PN 10/16 Face to face: BS EN 558-1; the length in BS EN 558-1 is the same in DIN3202/API609/MSS SP-67:2002. Pressure test conform to API598. Suitable Medium: water、sewage、sea water、air、foodstuff、oil etc. Working temperature:-10 to 150 degrees Celsius. Suitable for handles (DN50---300), Gear Operators, electric and pneumatic control actuators;