Flow control fitting

Claim 1

IN COMBINATION WITH A FILTER, A FITTING COMPRISING (A) A HOUSING HAVING A CHAMBER, (B) MEANS CONDUCTING A FLUID FROM SAID CHAMBER THROUGH SAID FILTER AND BACK TO SAID CHAMBER, (C) A ROD CARRIED IN SAID HOUSING AND HAVING A PORTION EXTENDING INTO SAID CHAMBER, (D) VALVE MEANS CARRIED BY SAID ROD AND INCLUDING A FIRST MEANS AXIALLY MOVABLE WITH SAID ROD TO A POSITION PREVENTING THE FLOW OF FLUID FROM SAID CHAMBER TO SAID FILTER AND A SECOND MEANS AXIALLY MOVABLE WITH SAID ROD TO A POSITION PREVENTING FLUID FLOW FROM SAID FILTER TO SAID CHAMBER, (E) MEANS ACTUATING SAID FLOW PREVENTING MEANS CARRIED BY SAID ROD EXTERIORLY OF SAID HOUSING, (F) SAID HOUSING HAVING A FLUID INLET AND A FLUID OUTLET, (G) SAID VALVE MEANS FURTHER COMPRISING A THIRD MEANS AXIALLY SLIDABLY CARRIED ON SAID ROD AND BEING MOVABLE THEREON INDEPENDENTLY OF THE MOVEMENT OF SAID FIRST AND SECOND MEANS AND BEING DISPOSED IN SAID CHAMBER INTERMEDIATE SAID INLET AND SAID OUTLET AND BEING RESPONSIVE TO A PRESSURE INCREASE IN FLUID ENTERING SAID FILTER TO OPEN A ROUTE BETWEEN SAID INLET AND SAID OUTLET BYPASSING SAID FILTER, (H) SAID THIRD MEANS FURTHER BEING OPERABLE TO MAINTAIN SAID BYPASS ROUTE OPEN WHEN FLUID IS PREVENTED FROM FLOWING TO AND FROM SAID FILTER BY SAID FIRST AND SECOND MEANS AND INCLUDING MEANS RETURNING SAID THIRD MEANS TO A CLOSED POSITION UPON THE FLOW OF FLUID TO SAID FITTING BEING STOPPED.