needle valve针阀调节精度比较高。 活门呈针状，沿水流方向动作，改变过流断面积，用以截断或调节流量的阀门。
化油器针阀 MIKUNI
针阀座 pintle valve seat ; Needle seating ; [机] needle valve seat
针阀杆 Needle shaft ; [机] needle stem
喷油器针阀 oil-fuel injector needle-valve ; injector needle ; fuel injector needle
喷嘴针阀 nozzle needle
喷油嘴针阀 injector valve ; nozzle needle valve
浮针阀 float needle valve
针阀油杯 oil pot with needle valve
小型针阀 miniature needle valve
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