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needle valve

   Also found in: Acronyms, Encyclopedia, Wikipedia 0.01 sec.
needle valve
n.
A valve having a slender point fitting into a conical seat, used to regulate accurately the flow of a liquid or gas.

needle valve
n
(Engineering / Mechanical Engineering) a valve containing a tapered rod that can be moved in or out to control the flow of a fluid


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The company boasts the most unique needle valve on the market today, which solves the two typical leakage problems that occur with alternative needle valves; leaking across the seat and leakage from the spindle seal.
The new ball and needle valves Co 20K Hi-Pro ball valve and 20K H-Series needle valve Co are fabricated from 316 stainless steel as standard, and offered in Nace (corrosion) compliant and HCT (heat code traceable) versions.
Another remarkable development was the 'magnetic carburettor' in which an electrically operated needle valve could be used to cut off the fuel supply when the car was coasting, thus economising on petrol.
 
 
 
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