Features and Benefits Flexible disc fully vulcanized with EPDM rubber assures positive sealing at high and low pressures. 15 sealing angle between the disc and seat can ensure low pressure sealing. Electrostatically applied Akzo Nobel epoxy powder internally and externally. Applicable Standards Connection standard: BS EN 1092-2 Pressure test standard: BS EN 12266-2003 Face to face standard: BS EN558: 2008 Technical Data Nominal Diameter:DN50~DN300(2 ~12") Nominal pressure: PN16 Temperature range: -5 C ~ +85 C Suitable for: Water, ethylene glycol, non correction medium, etc.