Series type valves with float position

Claim 1

IN A CONTROL VALVE, A HOUSING HAVING A BORE EXTENDING THERETHROUGH AND OPEN AT EACH END TO RECEIVE AN ELONGATED SPOOL VALVE ELEMENT, A FLUID INLET IN SAID HOUSING EXTENDING TRANSVERSE TO SAID BORE AND INTERSECTING THE BORE INTERMEDIATE ITS ENDS, A FLUID OUTLET IN SAID HOUSING HAVING PORTIONS TRANSVERSE TO AND INTERSECTING THE BORE ON EACH SIDE OF THE FLUID INLET, EACH EXTENDING TRANSVERSELY OF SAID BORE AND INTERSECTING THE BORE AT A POINT ADJACENT TO BUT SPACED FROM THE INTERSECTION OF THE INLET PASSAGE, A VALVE ELEMENT SLIDABLE IN SAID BORE, SAID VALVE ELEMENT BEING HOLLOW ALONG ITS AXIS FRO M A POINT ADJACENT ONE END TO A POINT ADJACENT THE OPPOSITE END PROVIDING END TO END COMMUNICATION THERETHROUGH, A PAIR OF HIGH PRESSURE PORTS INTERSECTING THE BORE ONE ON EITHER SIDE OF THE SAID FLUID INLET AND OUTLETS, A PAIR OF EXHAUST OUTLETS IN THE HOUSING INTERSECTING THE BOR EON EITHER SIDE OF THE FLUIS INLET AND OUTLETS AND HIGH PRESSURE PORTS AND PASSAGE MEANS COMMUNICATING BETWEEN THE FLUID INLET AND THE BORE ADJACENT EACH OF THE HIGH PRESSURE PORTS, SAID VALVE ELEMENT HAVING A NEUTRAL POSITION IN WHICH FLUID PASSES DIRECTLY THROUGH THE FLUID INLET AND THE BORE INTO THE FLUID OUTLETS, A POWER POSITION FOR EACH HIGH PRESSURE PORT WHICH DIRECTS FLUID FROM THE FLUID INLET THROUGH THE SAID PASSAGE MEANS TO ONE HIGH PRESSURE PORT WHILE DIRECTING FLUID FROM THE OTHER HIGH PRESSURE PORT TO AN ADJACENT FLUID OUTLET AND A FLOAT POSITION IN WHICH THE TWO HIGH PRESSURE PORTS ARE CONNECTED THROUGH THE HOLLOW AXIS OF THE VALVE ELEMENT AND THE FLUID INLET IS CONNECTED THROUGH THE BORE WITH THE FLUID OUTLET.