| 摘要 |
Device for selecting the operating mode of control heads, in particular for thermostatic valves, comprising a body (10) provided with means (12,12a) for fastening to the valve and with first means (16) for locking rotation; a flange (13) which is fixed to the body (10) and on which an axially extending tooth (15) is present; means (11a) for engagement with a support element (30) which can be associated in the axial direction with a sensor holder (50;150) for a sensor (40;140); a rotating knob (70) for selection of the desired temperature by the user, which has an external graduated scale (74); a ring (20) movable both in the axial direction and rotationally, said tooth (15) of the flange (13) being arranged in an angular position such as to be axially aligned with the first tooth of the body (10) and arranged opposite the latter, said ring having a graduated scale (24) on its external surface and an internal projection (23) extending over the whole axial length of the said ring (20) as well as a front surface (22) provided with seats (22a) able to engage alternately with the said second tooth (15) of the flange (13) or with the first tooth (16) of the body (10) and with at least one of the said internal projections (72a,72b) of the knob (70). <IMAGE>
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