| 摘要 |
<p>A float air vent valve for a de-aerator device for a heating circuit comprises a valve body (3) defining a cavity (4) that extends along a longitudinal axis (X), a float (5) slidably housed in the cavity (4), a cover element (6) for superiorly closing the valve body (3) provided with an air release opening (8) transversal with respect to the longitudinal axis (X), said cover element (6) including a plug (9) for said air release opening (8) operatively connected to the float (5). The cover element (6) and the valve body (3) comprise a first connecting portion (12) and a second connecting portion (13), respectively, which together define a swivel joint (14) preventing a relative axial movement between the cover element (6) and the valve body (3), parallel to the longitudinal axis (X), and allowing, even during the operation of the heating circuit, an angular adjustment of the cover element (6) around the longitudinal axis (X) and relative to the valve body (3) for orienting in a desired manner the air release opening (8). The first connecting portion (12) and the second connecting portion (13) define together an annular holding seat (17) for housing holding means (18) suitable for preventing the above-mentioned relative axial movement and for allowing the angular adjustment of the cover element (6) during the operation of the valve (1). Furthermore, the first connecting portion (12) and the second connecting portion (13) define together an annular sealing seat (21) for sealing means (22).</p> |
