BOOK 2, CHAPTER 8: Directional Control Valves | Hydraulics ...
BOOK 2, CHAPTER 8: Directional Control Valves. Table of Contents Bud Trinkel, CFPE | Sep 23, 2008. ... Usually, force required to return a cylinder is minimal, so lower pressure at the rod port saves energy. ... The open center condition unloads the pump and allows the actuator to coast to a stop or float. In the crossover or transition ...