发明名称 INLET VALVE
摘要 PURPOSE:To make coherent force between a packing and an inner circumferential surface of a valve case uniform at all spots, by setting up an upstream member, being made up into a convex cupped form at the upstream side where an opening end edge is tightly attached to a peripheral edge proximate position, at the upstream side of a main plate. CONSTITUTION:On a surface at the upstream side of a main plate 21, an upstream member 28, made up into a convex cupped form at the upstream side where a diameter of an opening edge is set to somewhat a smaller value than that of the main plate 21, is set up from the outer side of a spindle 22, and the peripheral edge is welded to a peripheral edge proximiate position of the main plate 21. The upstream member 28 is elastically deformed as it receives water pressure, thereby having both peripheral edges of the main plate 21 and a ringlike disc 26 elastically deformed uniformly in an expanding diametral direction, and the packing 25 held by both these plates 21 and 26 in between is made to stick fast to an inner circumferential surface of a valve case 24 whereby running water is completely sealed up.
申请公布号 JPS61105372(A) 申请公布日期 1986.05.23
申请号 JP19840227353 申请日期 1984.10.29
申请人 TOSHIBA CORP 发明人 INAGAKI TAIZO
分类号 F16K1/22;F16K1/228 主分类号 F16K1/22
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