| 摘要 |
<p>Floating valve (20) in a hydraulic cab tilting system: one ball (22) doubles as non-return valve in the two directions of the hydraulic flow of the free-floating cylinder; it is contained in one drillhole (25, 26) in the housing (2); only one ball (22) is required, because the valve seats (28, 31) are face to face.</p> |
