Brass check valve technical standard: 1. brass check valve nominal pressure: 1.6 MPa 2. brass check valve forged by punch Brass swing check valve:Material (valve body): CopperTechnical: Forged, 1.6 MPa pressureValve surface: Galvanized, chrome and Nickel plated,etc.Temperature: Normal or -20oC to 150oCMedium: Water, Oil , Gas,etc.Size: 1/2", 3/4", 1", 1 1/2", 1 3/4", 2", 2 1/2", 3", 4" Guarantee: ...