| 摘要 |
<p>The present invention relates to a valve for introducing resin in a sand mixing machine, comprising a valve body (2) with a fixed valve seat (8'), and an actuator (1) comprising a stem (1') provided with a plug (5) movable with said stem between a valve close position in which the plug (5) is in contact with the fixed seat (8') and a valve open position in which the plug (5) is not in contact with the fixed seat (8'). The plug (5) is fixed in the stem (1') with a clearance such that it can move with respect to said stem (1') in a direction perpendicular to said axial direction to facilitate the automatic centering of the plug (5) with respect to the fixed seat (8').</p> |
