Soft seat valve

A zero leakage valve, employing a radially squeezed elastomeric o-ring seal. In opening and closing, the o-ring is transferred from the valve element to a following retainer sleeve. The transfer is facilitated by relieving the squeeze on the o-ring coincidental with valve movement from closed to ope...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	WALKER, JAMES V
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 HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A zero leakage valve, employing a radially squeezed elastomeric o-ring seal. In opening and closing, the o-ring is transferred from the valve element to a following retainer sleeve. The transfer is facilitated by relieving the squeeze on the o-ring coincidental with valve movement from closed to open positions. One embodiment is a dual element check valve employing the radial seal in conjunction with a conventional poppet and seat combination. The two valve elements act in a series arrangement.