Profile: Fitz Equipment Co., Inc. specializes in providing air compressor valves, air control valves, and engine water pumps. We also manufacture a wide variety of clutch spiders, hubs, and drum hubs as well as input group drives for most engine/converter applications. Our model F torque converter units bolt directly to the engine flywheel housing. It is designed with a positive gear tooth drive that transmits power from the flywheel with no clutch. The Model F input drive is available on all sizes.