needle valve

Definitions

Aviation

Cars & Driving

  • noun a valve with a needle-shaped pin that can be moved to control the flow of a fluid
  • noun in a carburettor, a valve which controls the amount of petrol flowing from the pump to the float chamber

Construction

  • A type of globe valve in which a long pin or needle, tapered at the end, moves in and out of a conical seat to regulate the flow of liquid.
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