Pressure fluid distributors

Claim 1

A VALVE ASSEMBLY COMPRISING A BODY HAVING A PRESSURE FLUID INLET PORT, AN EXHAUST PORT AND A CYLINDRICAL WALL PORTION, SAID BODY BEING PROVIDED WITH AT LEAST ONE MOTOR DUCT THEREIN, THREE COAXIAL DISC MEMBERS WITHIN SAID BODY, ADJUSTABLE MEANS FOR MAINTAINING SAID THREE DISC MEMBERS IN FACE TO FACE AND FLUID-TIGHT ENGAGEMENT, THE CENTRAL DISC MEMBER DEFINING A DISC VALVE ROTATABLE RELATIVE TO THE TWO OUTERMOST DISC MEMBERS AND PROVIDING WITH SAID CYLINDRICAL WALL PORTION AN ANNULAR SPACE COMMUNICATING WITH ONE OF SAID PORTS, FLUID PASSAGE DEFINING MEANS IN ONE OF SAID OUTERMOST DISC MEMBERS COMMUNICATING WITH THE OTHER PORT AND HAVING AT LEAST A PORTION THEREOF EXTENDING AXIALLY OF SAID NE OUTERMOST DISC MEMBER, AT LEAST NE OF SAID OUTERMOST DISC MEMBERS HAVING AT LEAST ONE FLUID PASSAGE RADIALLY SPACED FROM SAID AXIAL PASSAGE AND COMMUNICATING WITH SAID MOTOR DUCT, AND CHANNEL DEFINING MEANS IN SAID DISC VALVE, SAID CHANNEL DEFINING MEANS INCLUDING AT LEAST TWO PARALLEL LONGITUDINAL BORES EXTENDING ENTIRELY THROUGH SAID DISC VALVE SO AS TO HAVE ONE END CONSTANTLY SEALED BY ONE OF SAID OUTERMOST DISC MEMBERS AND POSITIONED TO HAVE TH OTHER ENG REGISTERING WITH SAID RADIALLY SPACED PASSAGE IN RESPONSE TO ROTATION OF THE DISC VALVE, MEANS DEFINING A FIRST SUBSTANTIALLY RADIAL BORE FOR ESTABLISHING COMMUNICATION BETWEEN ONE OF SAID TWO LONGITUDINAL BORES AND SAID AXIAL PASSAGE, AND MEANS DEFINING A SECOND SUBSTANTIALLY RADIAL BORE FOR ESTABLISHING COMMUNICATION BETWEEN THE OTHER LONGITUDINAL BORE AND THE ANNULAR SPACE.