| 摘要 |
<p>1535406 Fluid-pressure control circuits GENERAL GAS LIGHT CO 21 Sept 1976 [6 Oct 1975] 39129/76 Heading F1P [Also in Division F2] A manifold 11, Fig. 1, on which three valves may be mounted, has inlet and outlet passages 17, 18 passing therethrough, symmetrically arranged ports 31-34 which provide communication with each valve, and load ports 26, 27 for each valve which are located on a side of the manifold, Fig. 2, (not shown). Fig. 8 shows a 3-way valve mounted on the manifold by means of a plate 84. The latter is screwed to the base of the valve housing by screws 86, Fig. 13 the heads of which are received in recesses 36, 37 in the manifold, and the plate 84 is attached to the manifold by screws 93. The valve has inlet and outlet passages 71, 72 and a load passage 81, Fig. 9. An axially movable spool 56, which has O-ring seals 66 and is biased upwards, is provided. The valve may be mounted on the manifold so as to be normally open or normally closed, and to change from one to the other the valve is merely rotated through 180 degrees. Figs. 14, 15 show a 4-way valve which may be mounted on the manifold using the same ports 31-34. Both types of valve are adapted for solenoid operation.</p> |
