| 摘要 |
<p>The valve block assembly for controlling the flow of air at either of two pressures to the air operated mechanisms of a section of an I.S. machine, includes a number of valves each having a cylindrical sleeve and a valve element axially displaceable within the cylindrical sleeve between first and second control positions. A valve block body includes a corresponding number of bores for receiving the valves, the valve sleeves being closed at one end and having an opening extending through the closed end through which air under pressure can be delivered to the valve. The sleeves can have two selected orientations each defining an opening location spaced from the opening location at the other orientation. The valve sleeve is maintained at either of the two orientations, with a conduit communicating with the openings when the sleeve is at one of the orientations for delivering air at one pressure to the valves and a second conduit communicating with the openings when the sleeve is at the second orientation for delivering air at a second pressure to the valves.</p> |
