HAND-WHEEL FOR ADJUSTING THE OUTLET OF A TAP FOR GAS CYLINDER

摘要

The invention is directed to a hand-wheel (6) for adjusting an outlet pressure and/or a flow-rate of a tap (12) for a gas cylinder, said hand-wheel (6) comprising a body (6¹); and a transparent cover (6²) fixed on the body (6¹). The hand-wheel (6) further comprises indicia (38) arranged between the transparent cover (6²) and the body (6¹) so as to be visible by a user but not in contact with the fingers of said user. The invention is also directed to a tap for gas cylinder, comprising such a hand-wheel, as well as to a tap assembly comprising such a tap and a cover housing said tap.