Double-disc swing check valve(API)built-in
Class 150 PN20Class 150 PN20 ASME B16.47B,API 605,GB13402
Class 150 PN20 ASME B16.47B,MSS SP-44
Class 300 PN50
Class 300 PN50 ASME B16.47B,API 605,GB/T 13402
Class 300 PN50 ASME B16.47B,MSS SP-44
Class 600 PN110
Class 600 PN110 ASME B16.47B,API 605,GB/T 13402
Class 600 PN110 ASME B16.47B,MSS SP-44
Class 900 PN150
Class 900 PN150 ASME B16.47B,API 605,GB/T 13402
Class 900 PN150 ASME B16.47B,MSS SP-44
Class 1500 PN260
Class 2500 PN420