> There's no tiny nut to loosen or tighten like there is with a Presta valve, and there's also no need to lock the pump in place to create a secure fit during inflation. The top of the valve is protected enough that no cap is necessary, and it extends just enough that you can let a little air out with a fingernail or something similar to reduce air pressure.

https://www.pinkbike.com/news/schwalbe-introduces-new-clik-valve.html

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