IMI PBM manufactures up to 12" reduced port, CL150, nickel aluminum bronze for ballast valves. They are utilized for Bilge, Utility Seawater, Sea-Chest, Injection Water, Pump Skids, & Water Flood. IMI PBM instrument, double block and bleed, and transmitter isolation valves feature no gauge ports, CL2500, exotic alloys, and are API 607 Ed. qualified.