What does “direction unseats” mean?
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The initial movement of the valve stem in the opening direction dislodges the pilot valve. How should this be understood?
The initial movement of the valve stem in the opening direction dislodges the pilot valve. When the valve stem moves in the opening direction, it first causes the pilot valve to come loose from its seat. ——FYI
The initial movement of the valve stem in the opening direction unseats the pilot valve. It’s easier to understand when the adverbial phrase is placed at the end: Initial movement of the valve stem unseats the pilot valve (in the opening direction). When the valve opens, the pilot valve stem first moves away from its seat. I don’t know much about valves; please give me some advice!
\"in the opening direction\" is a phrase, while \"unseats\" is a verb; it likely means that as the valve stem starts to move in the opening direction, the control valve immediately stops functioning (it no longer plays any role in control).