Manual valve

Claim 1

IN A VALVE; (A) A VALVE BODY HAVING A LONG CYLINDRICAL VALVE BORE WITH A FLUID SUPPLY PORT, AN EXHAUST PORT AND A CONTROLLED PORT; (B) A LONG CYLINDRICAL VALVE ELEMENT RECIPROCALLY MOUNTED FOR MOVEMENT TO A PLURALITY OF POSITIONS IN SAID BORE AND HAVING SPACED LANDS AND AN INTERMEDIATE PORTION OF REDUCED DIAMETER; (C) SAID VALVE ELEMENT HAVING A SUPPLY BORE CLOSED AT BOTH ENDS AND AN EXHAUST BORE CONNECTED TO SAID EXHAUST PORT IN SAID BORE AND BOTH SAID SUPPLY AND EXHAUST BORES EXTENDING THROUGH A LAND AND SAID SUPPLY AND EXHAUST BORES HAVING AXES SUBSTANTIALLY INTERSECTING A FIRST DIAMETER OF SAID VALVE ELEMENT; (D) SAID SUPPLY PORT IN SAID BORE BEING LOCATED BETWEEN SAID LANDS IN ALL VALVE POSITIONS; (E) A SUPPLY PASSAGE IN SAID VALVE ELEMENT CONNECTING SAID SUPPLY BORE THROUGH THE VALVE ELEMENT IN SAID INTERMEDIATE PORTION TO CONNECT SAID SUPPLY BORE TO SAID SUPPLY PORT IN SAID BODY IN ALL VALVE POSITIONS; (F) AN ANNULAR SUPPLY PORT FORMED AS A GROOVE IN SAID LAND OF SAID VALVE ELEMENT CONNECTED TO SAID SUPPLY BORE LOCATED IN SAID LAND TO PROVIDE A SELECTIVE CONNECTION TO SAID CONTROLLED PORT IN SAID BODY AND THE SUPPLY PORT IN SAID VALVE ELEMENT HAVING SUBSTANTIALLY BALANCED AREAS LOCATED ON OPPOSITE SIDES OF SAID FIRST DIAMETER THROUGH THE AXIS OF SAID SUPPLY AND EXHAUST BORES AND SUBSTANTIALLY BALANCED AREAS ON OPPOSITE SIDES OF A SECOND DIAMETER LOCATED PERPENDICULAR TO SAID FIRST DIAMETER TO SUBSTANTIALLY BALANCE THE FORCES DUE TO FLUID PRESSURE IN SAID SUPPLY PORT OF SAID VALVE ELEMENT; (G) SAID VALVE ELEMENT AT SAID SUPPLY PORT HAVING A SECTION WITH MATERIAL LOCATED ALONG SAID FIRST DIAMETER BETWEEN EACH OF SAID SUPPLY AND EXHAUST BORES AND THE PERIMETER TO PROVIDE A HIGH MOMENT SECTION TO PREVENT DEFLECTION; (H) AND AN EXHAUST PORT IN SAID VALVE ELEMENT CONNECTED TO SAID EXHAUST BORE AND SELECTIVELY CONNECTING SAID CONTROL PORT TO EXHAUST.