API Check Valve 1) Sizes: 2?24? 2) Pressure: 150LB, 300LB, 600LB 3) Valve Body: ASTM A216 WCB 4) Disc: ASTM A216 WCB 5) Bonnet: ASTM A216 WCB 6) Seal: Stainless Steel D507Mo, D577 7) Rod pin: ASTM A216 WCB 8) Axle pin: 1Cr13, F6a 9) Type: Swing Star Check Valve 10) Connection type: Flange end 11) Control method: Manual 12) Body experiment: 2.94MPa, 7.67MPa, 15.3MPa 13) High-pressure fluid seal: 2.16MPa, 5.62MPa, 11.23MPa 14) Low pressure gas seals: 0.6MPa 15) Suitable temperature: -29 Degree?25 Degree 16) Suitable medium: Water, Vapor, Oil