Coupled with the high flow capacity, the Hi-Flow control valve maintains a wide rangeability of 50:1 to insure precise control. Heavy duty Hi-Flow control valves are ruggedly constructed of the highest quality materials, precision machined, and performance tested to assure years of trouble free service. Standard packing consists of PTFE V-rings and wiper to minimize friction without leakage at high operating pressures. Available in brass, iron, 316 SS body, trim is 316 SS with all welded plug construction provide superior durability and corrosion resistance. Product Highlights Wide Rangeability of 50:1 Exceptional shut-off and leak rate that meets ANSI/FCI 70-2 Class IV (0.01% of Cv in the closed position) Selectable fail safe condition with Air-to-Raise or Air-to-Lower actuators and Push-to-Open or Push-to-Close valve bodies Linear or equal percentage flow characteristics Low flow options of restricted trim or needle plug Removeable and replaceable seat ring 1/2" control valve Cv of 6.45 bronze body USP set at 125 psig (8.6 bar) USP adjustable range 96-200 psig (6.8-13.8 bar)