Our popular GV10 valve has been redesigned. An all aluminum construction with banjo fittings all the way around. Now mounted on a sturdy stainless steel bracket with multiple mounting holes for easy installation. All valves come with a weather tight wiring harness with 10 foot lead wires. Each wiring harness has an LED at the valve so you can confirm that you have power to the valve. The heart of the New GFS system is the 3V Assembly. Our new 3 Valve assembly offers ultimate control of your return flow. Looped when on vegetable oil, Return to Vegetable oil tank for purge and return to the diesel tank when running diesel.