Stem indicator

{
  "id": "MLC-T-OAG-003615",
  "term": "Stem indicator",
  "field": "Oil and gas",
  "definition": "A visual device on a valve that shows the position of the valve's closure element (gate or globe). On a rising-stem valve, the amount of stem protruding from the valve body provides a direct and immediate indication of whether the valve is open, closed, or partially open. Non-rising stem designs require a separate indicator, such as a pointer attached to the stem that moves against a marked scale.",
  "subject": "Production",
  "url": "https://mlchart.com/terminology/oil-and-gas/stem-indicator/"
}