The Smart FPS DX Series is equipped with three-stage water removal and particulate filtration. It reverses fuel deterioration, polymerization to submicron levels, decontaminating, cleaning and stabilizing your fuel providing clear and bright fuel for peak engine performance and reliability at all times. It has a flow rate of 80 GPH (300 liters per hour). For tanks up to 500 gallons (1,900 liters). Operates on 12V DC or 24V DC. The DX model is equipped with a MECHANICAL timer. The DX-D model is equipped with a DIGITAL timer. The DX-LD model is equipped with a DIGITAL timer and a leak detection sensor and alarm.