CHECK VALVE

A check valve capable of being reduced in size and suppressing the generation of chattering, including: a seat member arranged at a channel of a fluid including a large-diameter portion, small-diameter portion, and seat portion, the large and small-diameter portions provided at an inner periphery of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KIYOSE, Hiromitsu, KATO, Kodai, SAKATA, Yukinobu, NAKAMURA, Noritaka
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 check valve capable of being reduced in size and suppressing the generation of chattering, including: a seat member arranged at a channel of a fluid including a large-diameter portion, small-diameter portion, and seat portion, the large and small-diameter portions provided at an inner periphery of the seat member, the seat portion provided between the large and small-diameter portions; a valve element pressed against the seat portion to close the channel; and a casing including a valve chest accommodating the valve element so the valve element is movable in an axial direction. The large-diameter portion has an inner diameter larger than an outer diameter of the valve element which enters in the axial direction. A space through which fluid flows is formed between the large-diameter portion and the valve element. The diameter of the large-diameter portion is equal to or less than 1.2 times the diameter of the valve element.