| 摘要 |
<p>A rotating union including a seal assembly having a rotating seal member carried by the rotor, a non-rotating floating seal member carried by a fluid actuated assembly mounted in and keyed to the housing of the union, the fluid actuated assembly including a flexible diaphragm interposed in the fluid flow path and which is flexed responsive to fluid pressure through the union to move the non-rotating seal member into engagement with the rotating seal member, the diaphragm being unflexed in the absence of fluid pressure through the union whereby the non-rotating seal member is maintained out of engagement with the rotating seal member.</p> |
