Instant action valve and reservoir control therefor

Claim 1

A VALVE PROVIDING ON-OFF CONTROL WHICH COMPRISES A HOUSING, A VALVE CHAMBER, A FLEXIBLE DIAPHRAGM DIVIDING SAID CHAMBER INTO A FIRST SUB-CHAMBER AND A SECOND SUBCHAMBER, AN INLET TO SAID HOUSING AND SAID VALVE CHAMBER, AN OUTLET EXTENDING INTO SAID SECOND SUB-CHAMBER AND ADAPTED TO BE CLOSED BY SAID DIAPHRAGM, A VALVED VENT COMMUNICATING WITH SAID FIRST SUB-CHAMBER, A VALVED PRESSURE LINE BETWEEN SAID FIRST AND SECOND SUB-CHAMBER DUAL PORT MEANS IN FLUID COMMUNICATION WITH SAID VENT AND WITH SAID PRESSURE LINE, A PLUNGER PLUG MEANS SHIFTABLE BETWEEN SAID DUAL PORT MEANS AND CONTROLLING SAID VENT AND PRESSURE LINES, SAID PLUNGER PLUG MEANS HAVING UPPER AND LOWER DUAL PLUGS IN AXIAL ALIGNMENT, AND SHIFTING MEANS OPERATIVELY CONNECTED TO SAID PLUNGER FOR SHIFTING SAID PLUNGER BETWEEN TWO EXTREME POSITIONS WHEREBY SAID FIRST SUB-CHAMBER IS ALTERNATELY VENTED TO THE ATMOSPHERE OR MAINTAINED UNDER LINE PRESSURE THEREBY TO POSITION SAID DIAPHRAGM AND CONTROL FLOW THROUGH SAID VALVE.