Balanced-flow gas safety valve

A gas line limiter valve is preferably built into a stiffener used to connect gas lines. The valve includes a through-passage having a large bore and a small bore downstream from the large bore, with a conical valve seat between. A central reservoir may be disposed between the large and small bores....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MCGINNIS, JOSEPH M
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 gas line limiter valve is preferably built into a stiffener used to connect gas lines. The valve includes a through-passage having a large bore and a small bore downstream from the large bore, with a conical valve seat between. A central reservoir may be disposed between the large and small bores. A movable float includes a piston disposed within the large bore, a stem disposed within the small bore, and a popper to seal against the valve seat when the float is moved downstream. A coil spring urges the float upstream. The stem and the piston are cylindrical. The piston and large bore form a first orifice, and the stem and small bore form a second orifice. With the second orifice being smaller than the first, the second orifice and the buffer gas inside the reservoir create a resistance to the valve closing during sudden temporary drops in the downstream pressure.