Mathias NY, not exactly correct. In a closed center system, the pump is ALWAYS pressurizing the fluid to a high PSI, and maintains that by using a high-pressure bypass valve. So you are still pumping the fluid, whether it's an open or closed center system. Since the closed center system is running at MAX pressure when not being used, it is the one that generates more heat and is less efficient. An open center system always circulates the fluid, but when the valves are centered it is at a very low pressure, and therefore doesn't generate as much heat or use as much fuel
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Today's Featured Article - Show Coverage: Journey to Ankeny - by Cindy Ladage. We left Illinois on the first day of July and headed north and west for Ankeny, Iowa. Minus two kids, we traveled light with only the youngest in tow. As long as a pool was at the end of our destination she was easy to please unlike the other two who have a multitude of requirements to travel with mom and dad. Amana Colonies served as a respite where we ate a family style lunch that sustained us with more food than could reasonably fit into our ample physiques. The show at Ankeny
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