High-flow dual poppet valve having equalized closing forces

A dual-poppet valve comprising a valve body having spaced-apart coaxial valve seats and being arranged such that first and second poppets both open into the primary chamber. A first pintle shaft engages the first poppet, and a second pintle shaft engages the second poppet. A motorized actuator havin...

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Bibliographische Detailangaben
Hauptverfasser:	HABETS JOHN G, SPAKOWSKI JOSEPH G
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MECHANICAL ENGINEERING TAPS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A dual-poppet valve comprising a valve body having spaced-apart coaxial valve seats and being arranged such that first and second poppets both open into the primary chamber. A first pintle shaft engages the first poppet, and a second pintle shaft engages the second poppet. A motorized actuator having a gear transmission includes a pinion gear. The pintle shafts include opposing gear racks, and the pinion gear engages both racks. Thus, rotation of the pinion gear in a first direction causes both poppets to be lifted from their seats simultaneously, in opposite directions; and counter-rotation engages each poppet with its respective seat. In closing, one poppet engages its seat slightly before the other poppet engages the other seat. The first pintle slides through the first poppet until the second poppet is fully seated by the actuator. The force of the spring fully engages the first poppet with the first seat.