The Watercell X and Watercell ST have a 63mm threaded opening. This is the same size as a standard Nalgene bottle.
You can connect some water filters to a Watercell - any water filter with a 63mm thread will fit.
Some water filters (especially those designed to screw into a drinking bottle) use a 42mm threaded connector. They will not fit the threaded opening of a Watercell.
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Articles in this section
- What is the thread size of a Watercell X or ST fill cap? Can I connect a water filter to a Watercell?
- Can I use very hot water in a Watercell (hot water bottle/showering/cleaning)? Can I freeze a Watercell (for use in a cooler?)
- What are the differences between Watercell ST and Watercell X?
- How do I clean my Watercell / Pack Tap?