Siemens B220FM BFV 2W 20" 150 PSI GEARBOX ASSEMBLYSiemens B220FM BFV 2W 20" 150 Psi Gearbox AssemblyButterfly Valve, 2 way, 20 inch, 150 psi, Gearbox Assembly Additional Information Valve Size20 in Flow Coefficient, Cv7144 Valve TypeTwo way Valve Body StyleRotary Butterfly Port Configuration2 Way Normally closed End ConnectionLug Material, valve bodyCast Iron Trim MaterialStainless Steel Butterfly DiscFull Cut Disc Flow CharacteristicModified Equal percentage MediumWater , Water with anti freeze Max