The in-bowl electric heater helps with cold starting, while the recirculating valve uses unused warm engine fuel returning to the tank to help provide full-flow on-demand heated fuel to the filter at full engine load. Approved for biodiesel fuels to B20, GreenMax also has dual inlet and outlet ports, a flow rate of up to 150 GPH (568 LPH), a standard water-in-fuel sensor and a large clear bowl for visual fuel-quality checks.
Parker Hannifin Corp. Racor Division, www.parker.com/racor