Design standard: BS 1873/ ASME B16.34/ EN 13709 valve Face to Face: EN 588-1, ASME B 16.10 Flange end: ASME B16.5/ EN1092-1 Inspection & Test: API598, ISO 5208/ EN12516 angle globe valve Butt-welding: ASME B 16.25/ EN12627