Patent ID: 7438086
Filing Date: 2008-10-21
Classification: F15B,Y10T

Abstract:
1. Control valve apparatus for coupling pressurized fluid to first and second actuators, comprising: a first double valve comprising: a second double valve comprising: a first pilot fluidically coupled to said first valve element, said first pilot having a first pilot fluid inlet; a second pilot fluidically coupled to said second valve element, said second pilot having a second pilot fluid inlet; a third pilot fluidically coupled to said third valve element, said third pilot having a third pilot fluid inlet; a fourth pilot fluidically coupled to said fourth valve element, said fourth pilot having a fourth pilot fluid inlet; a first interconnection fluidically coupling said first crossover passage with said third pilot fluid inlet; a second interconnection fluidically coupling said second crossover passage with said fourth pilot fluid inlet; a third interconnection fluidically coupling said third crossover passage with said first pilot fluid inlet; and a fourth interconnection fluidically coupling said fourth crossover passage with said second pilot fluid inlet.