Butterfly Valve Double Flange Double Eccentric Butterfly Valve Design standard Conform To: EN 593 Connection flange conform To: EN1092-2, ISO7005-2 Top flange conform to: ISO 5211 Face to face conform to: EN 558 Series 14 Test standard conform to: EN12266-1 Nominal working pressure: PN10/PN16/PN25/PN40 Get A Quote