| 主权项 |
1. In combination:
an underground valve for a supply line and having an underground actuator through which the state of the valve can be changed to control flow within the supply line; and a conduit assembly embedded in ground material and defining an access passage through which above ground access can be obtained to the valve actuator, the conduit assembly further comprising a cap that can be selectively changed between: a) a first state wherein the cap blocks the entry opening; and b) a second state wherein above ground access can be gained to the valve actuator through the entry opening and access passage, wherein the conduit assembly comprises an upper conduit part and a lower conduit part that each has a lengthwise vertical axis, wherein the upper and lower conduit parts are interconnected and configured to that they move axially guidingly against and relative to each other so as to vary an effective combined axial length of the upper and lower conduit parts in response to forces generated by the ground material that otherwise would tend to cause damage to the conduit assembly. |
