Size: 2â-48â Pressure Rating: 150-2500 LB Material: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel End: BW, RF, RTJ Operation: Manual, Pneumatic, Electric Design & Manufacture Standard: API 6D Face to Face: ASME B16.10 End Connection: ASME B16.5, ASME B16.25 Test Standard: API598 Bolted bonnet Full thru-conduit port for passage of pig Slab gate or Expanding gate Optional by-pass design Double block and bleed Cavity pressure self relief