Pressure:Class 150-1500 Size:NPS 2"-36" Standards Flange Butterfly Valves:MSS SP-67 Water Butterfly Valves:MSS SP-68 or API 609 Face to Face Dimensions:ANSI B16.10 MSS SP-67 and MSS SP-68 or 609 Test:API598 End Flange Dimensions NPS 1 1/2-24;ANSI B 16.5 NPS 30-72 MSS SP-44 or API 605