Four-way directional control valve

摘要: In a four-way directional control valve of simplified construction and reduced manufacturing costs, first second hollow cylindrical elements are arranged coaxially. Adjacent to opposite ends the elements, seats closure provided. First pressure-regulating chambers between separator walls partition associated seats. A pilot can be switched switching positions for introducing high-pressure fluid originating from pipe into or chamber via common passage, high pressure hole two holes, respectively, chambers. The state where communicates with fourth third another pipe.