Originally Posted by masskrug
You might want to dismantle the tip and clean it. I had some hop gunk in mine.
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If you aren't already you really want to dismantle and thoroughly clean/sanitize the tip of your bottling wand before and/or after you use it.
Also, the spring inside those things isn't too great so you might get better action by removing and then replacing it the other way round. Slide the little rubber "O" ring off the plunger and give those parts a clean.
I've had times when bottling that some hop debris, or some other type, has clogged the wand, or caused the tip to not fully return and so it kept dripping/leaking, during bottling. I just close the spigot on the bottling bucket, drain the contents of the wand, dismantle the tip and flush/clean/sanitize again, reassemble and carry on. Also a good idea to have another one handy, just in case. Lets face it, they are cheap as chips and an invaluable tool.