Features and Benefits The double eccentric design offers an optimal sealing performance. Smart stainless steel seat, very low torque - easy to be operated. The EPDM rubber ring was fixed on the edge of the disc by the retainer ring, easy to be replaced. Eccentric pin connect the disc and stem, not destroy the structure of the stem, make sure the safety and strength. Applicable Standard Design standard: BS5155, EN593, API609 Flange standard: BS EN1092-2 Top flange standard: ISO5211 Face to face standard: EN558-1 basic series 13 Top flange standard: ISO5211/1 Technical Data Nominal Diameter: DN300~DN2400(12"~96") PN10 DN300~DN900(12"~36") PN16 Temperature range: -5 C ~ +85 C Sealing test: 1.1PN Shell test: 1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc.