A needle valve is a type of valve having a small port and a threaded, needle-shaped plunger. It allows precise regulation of flow, although it is generally only capable of relatively low flow rates.
Read more about Needle Valve: Construction and Operation, Uses
Famous quotes containing the word needle:
“The meteor that thrusts in with needle bill,
And off a blossom in mid-air stands still.”
—Robert Frost (1874–1963)
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