| 摘要 |
<p>The present invention relates to a valve stem assembly of a pilot valve that can prevent a noise pollution, a response delay phenomenon or the like, by minimizing wear in the course of sliding movement of a valve stem within a valve seat. The valve stem assembly of the pilot valve according to the present invention includes a cylindrical valve seat with an opened lower end; a valve stem that is installed within the valve seat in a vertically movable manner to vertically move by the pressure of the fluid; and a plurality of balls that is installed between the valve seat and the valve stem to reduce friction while rolling during the vertical movement of the valve stem with respect to the valve seat.</p> |
