... :Sea WorthyDelivery Detail:As Soon As PossibleSpecificationsdual plate check valve, ISO CE and API Approved Size: 2"~60" Rating: CL150~CL2500 Materials ... Disc, Half Lug or Fully Lugged Types.Design & Manufacture: API 594, API 6D or ISOPres-temperature Ratings: ANSI B16.34, DIN 2401 ... , API 6DSize Ranges: 2" to 60"N. B. Pressure Ratings: ANSI 150, 300, 600, 900, 1500, 2500 End Connections: Flanged or ...