| 摘要 |
An adjustable friction grip sprinkler riser includes a body defining a chamber, at least one port for introducing water into the chamber and a riser tube axially slidable relative to the chamber with an upper end thereof being adapted to carry a sprinkler head. The riser tube passes through a member for frictionally gripping an exterior surface thereof to frictionally lock the riser tube at any position of selective adjustment.
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