• Ignotum@lemmy.world
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      2 days ago

      To control the valve? So whoever manages to pull the sword wheel from the stone shaft becomes the new ruler of england Valve?

    • iocase@lemmy.zip
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      1 day ago

      Its a valve stem with hand wheel unless the valve body is buried under the floor out of sight. It looks like a gate valve to me where that lead screw literally lifts or lowers the gate into place in the valve body.

      Source: me a instrumentation and process control engineering technologist