| 摘要 |
<p>1,118,448. Valves. ACF INDUSTRIES Inc. 10 Nov., 1965 [22 Dec., 1964], No. 47633/65. Heading F2V. The closure plate 58 of a gate valve cooperates with a pair of annular seals 42, 44 which are mounted in the casing for limited axial movement relative to the inlet and outlet ports, and are spaced apart by a U-shaped member 130. The edge of member 130 is chamfered to facilitate assembly of the valve, and its lower part is shaped to permit sediment to flow to drain fitting 136. In various modifications (Figs. 6 and 7, not shown) member 130 is located in the housing by radially extending bolts or pins.</p> |
