How do they work?
Each brass tire deflator comes preset at 18psi and can be adjusted from 6-30psi. There is an adjustment cap and a lock ring to hold the cap in place. Each ½ turn of the adjustment cap decreases that setting by 3psi. Once you have set the pressure that you would like to deflate to, you can tighten the lock ring to keep them at that pressure for future use. You can also set the deflators by using a tire that is already aired down to a desired pressure. Simply screw the deflator onto that tire and turn the adjustment cap in until air just barely escapes. You are now at the desired pressure and can tighten the lock ring to keep them set there. You will have to do this for all 4 deflators. Since each ½ turn of the adjustment cap is 3psi of air you can use this to adjust to different pressures for different trails. I set mine at 12psi and left them there. Staun can also manufacture the deflators with custom valve settings.
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