Size: 2â-24â Pressure Rating: 600-2500 LB Material: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel End: BW, RF, RTJ Design & Manufacture Standard: BS 1868, ASME16.34, API 6D Face to Face: ASME B16.10, API 6D End Connection: ASME B16.5, ASME B16.25 Test Standard: API598, API 6D Pressure seal Swing type disc Damper & Counter weight options