The tire inflator I have connected to a compressor and am both with the operation that actually declared in the operation of its own, and the product description (It is described there that the previous seal was replaced by an aluminum pin) very satisfied. In the short-duration compressor attached deflation is not significant. But this is also the operation easier and you do not have his thumb "bend" to the purge button to drücken.Die readability is better than other fillers and the rotation is convenient and good, the same as the position of the tire valve. I am fully satisfied with the product ..