释义 |
needle valve
needle valven. 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 (Mechanical Engineering) a valve containing a tapered rod that can be moved in or out to control the flow of a fluid nee′dle valve` n. a valve with a needlelike part, a fine adjustment, or a small opening. [1900–05] needle valve
needle valve[′nēd·əl ‚valv] (mechanical engineering) A slender, pointed rod fitting in a hole or circular or conoidal seat; used in hydraulic turbines and hydroelectric systems. needle valveA type of globe valve in which the throttling is performed by a tapered pin moving in and out of a conical seat to adjust the fluid flow.needle valveA fluid control valve that uses a long tapered needle to finely control the amount of fluid passing through the orifice. The more the needle is in, the lesser is the amount of flow, and vice versa. It can be adjusted as required.AcronymsSeenanovolt |