Size: 2â-48â Pressure Rating: 150-2500 LB Material: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel End: RF, RTJ, BW Design & Manufacture Standard: API 594, API 6D Face to Face: API 594, API 6D End Connection: ASME B16.5, ASME B16.47 Test Standard: API598, API 6D Venturi port Low pressure loss, low flow resistance Quick open and close Low noise and low water hammer damage No out leakage Installed horizontally and vertically