| 摘要 |
A tank drain assembly for swimming pool filters is provided characterized by an improved locking and orienting structure individually locking collector tubes into their respective sockets in the manifold surrounding the common drain port of the filter tank, each such structure comprising spring finger means segmentally formed on the socket end of the tubes, and a finger receiving recess within the tube socket sized and located to operatively orient the tube apertures responsive to receiving the finger means in tube locking relation.
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