OP
Nickorossa
Registered
Thats an interesting thought. The O'three has a fixed at 4 points cover, whereas the ND has a flap. Its possible the flap was folded up and thus not covering the valve. Will consider that next time I use it to check.If you are completely dry it likely just the cold air hitting you when you add air, does your O3 have a cover on the inside of the inflator or are they designed differently?