Novel needle valve rod component

The utility model discloses a novel needle valve rod component which comprises a needle valve rod, a positioning conical surface is arranged at the bottom of the needle valve rod, and a steel ball isfixedly arranged in the positioning conical surface in a welded mode. A positioning taper hole is designed at the contact part of the needle valve rod and the steel ball; the structure is simple, manufacturability is good, and positioning of the steel balls is facilitated; and bounce of the welded steel ball relative to the needle valve rod is easy to guarantee. 本实用新型公开了一种新型针阀杆部件，包括针阀杆，其中，所述针阀杆底部设置有定位锥面，所述定位锥面内通过焊接固定设置有钢球；在针阀杆与钢球接触部位，设计定位锥孔；该结构简单、工艺性好，便于钢球的定位；焊接后钢球相对于针阀杆的跳动易于保证。