Recycling poppet valve

Claim 1

A RECYCLING POPPET VALVE COMPRISING A VALVE CASING HAVING THEREIN A VALVE CHAMBER AND SPACED FLUID INLET AND OUTLET PORTS COMMUNICABLE THEREWITH, A VALVE PLUNGER SLIDABLY MOUNTED IN SAID CHAMBER AND HAVING INLET AND OUTLET VALVING PORTIONS MOVABLE RESPECTIVELY INTO OPENING AND CLOSING RELATIONSHIP WITH SAID INLET AND OUTLET PORTS, A PLUNGER-SHIFTING ELEMENT MOVABLY MOUNTED IN SAID CASING IN SPACED RELATIONSHIP WITH SAID PLUNGER, A LATCH MEMBER MOVABLY MOUNTED IN SAID CASING BETWEEN SAID PLUNGER-SHIFTING ELEMENT AND SAID PLUNGER IN LONGITUDINAL MOTION-TRANSMITTING RELATIONSHIP THEREWITH, SAID LATCH MEMBER BEING MOVABLE LONGITUDINALLY SUFFICIENTLY TO SHIFT SAID PLUNGER LONGITUDINALLY INTO PORT-OPENING RELATIONSHIP WITH SAID FLUID INLET AND OUTLET PORTS IN RESPONSE TO A PREDETERMINED MOVEMENT OF SAID PLUNGER-SHIFTING ELEMENT, SAID LATCH MEMBER ALSO BEING MOVABLE LATERALLY OUTWARD AND INWARD RELATIVELY TO SAID PLUNGER BETWEEN AN OUTER PLUNGER-LATCHING POSITION PREVENTING PORT-CLOSING SHIFTING OF SAID PLUNGER AND AN INNER UNLATCHING POSITION PERMITTING SUCH SHIFTING, SAID VALVE PLUNGER HAVING AN OPENING THEREIN RECEIVING A PORTION OF SAID LATCH MEMBER IN UNLATCHING RELATIONSHIP THEREWITH IN SAID INNER UNLATCHING POSITION OF SAID LATCH MEMBER, YIELDING MEANS NORMALLY URGING SAID PLUNGER LONGITUDINALLY TOWARD ITS PORT-CLOSING POSITION, YIELDING MEANS NORMALLY URGING SAID LATCH MEMBER LATERALLY OUTWARD TOWARD ITS OUTER PLUNGER-LATCHING POSITION, MEANS RESPONSIVE TO THE LONGITUDINAL MOVEMENT OF SAID LATCH MEMBER FOR SHIFTING SAID LATCH MEMBER LATERALLY INWARD FROM SAID OUTER PLUNGER-LATCHING POSITION TO SAID INNER PLUNGER-UNLATCHING POSITION WITH SAID LATCH MEMBER PORTION ALIGNEDLY POSITIONED WITH SAID PLUNGER OPENING TO ENTER SAID OPENING, AND MEANS RESPONSIVE TO THE ATTAINMENT OF A PREDETERMINED PRESSURE IN SAID CHAMBER FOR URGING SAID PLUNGER TOWARD ITS PORT-OPENING POSITION.