| 摘要 |
<p>A valve spool, in particular for pneumatic directional control valves, possesses a cylindrical body (3) with control portions (2) arranged thereon and with intermediate portions (4) of reduced diameter, where control edges (12) are formed at the transitions between the portions (2, 4). The spool (1) is produced from synthetic resin so as to be hollow, the outer control portions (2) and interposed portions (4) of reduced diameter each possessing walls (5, 6) of equal thickness, and the synthetic resin consists of polyoxymethylene or polyamide with a proportion of fillers. <IMAGE></p> |
