Abstract: A control system for operating fluid actuated components of a packer mechanism for a refuse collection vehicle comprising a fluid tank; a pump having an inlet communicating with the tank; a control valve having a main fluid passageway therethrough communicating at an inlet port thereof with the pump and at an outlet port thereof with the tank, a pilot fluid passageway therethrough communicating at an inlet port thereof with the pump and at an outlet port thereof with the tank, a first valve spool selectively operable for communicating the main fluid passageway with a component of the packer mechanism, the first spool being displaceable between a first position obstructing the pilot fluid passageway and a second position not obstructing the pilot fluid passageway, the first valve spool having a surface disposed normal to the axis thereof communicating with the pilot fluid passageway, and a second valve spool selectively operable for communicating the main fluid passageway with another component of the packer m