Design and manufacture: DIN3352 Face to face: DIN3202-F5, F4, EN558-1 End flange Dimensions: DIN2543(PN16), DIN2544(PN25), DIN2545(PN40), EN1092-1 Pressure test: DIN3230, EN12266-1 The size of serial, valve connecting flange can be design according to customers’ requirement.