Bulk Tank Inc. is an ISO 9001 certified, nationally known company specializing in the manufacture of innovative parts for the pneumatic tank trailer industry. We manufacture MaxxLife Butterfly Valves, Utility Butterfly Valves, Optima Check Valves, Pressure Relief valves, Sand Hog Frac Sand (shale fracking) Hopper Tees, AllinOne Pipe Couplers, EasyOpen Hopper Tees, Aerators, Filter Screens and HD Valve Handles. We also have our own tool and die machining operation which enhances our already great customer service while allowing BTI to handle a multitude of special customer requests.