Bonny Valve has very extended experience in manufacturing of Cast Swing Type Check Valves Size: 2 inch up to 60 inch (DN50 up to DN1500) Pressure Rating: ASME 150LB,300LB,600LB,900LB,1500LB, 2500LB Materials: Carbon Steel, Low Temperature Carbon Steel, Stainless Steel, Duplex Stainless Steel, Super Duplex Stainless Steel, Nickel Alloys, Nickel Aluminum Bronze, Hastelloy, Inconel Etc. End Connection: Flanged RF, FF, RTJ, BW Specification: Design BS 1868 / API 6D / ASME B16.34 Face to Face ASME B16.10 End Flange ASME B16.5 BW End ASME B16.25 Test API598 Special NACE MR-01-75 Features: Bolted Bonnet or Pressure Seal Bonnet Bypass on Request Full port or Conventional Port Swing Type Disc