| 摘要 |
<p>The present invention relates to a thermostatic head (1) for valves, comprising a thermostatic actuator assembly (2), a nipple (3) for housing the actuator assembly (2) provided with at least a threaded end (31), a handle (8) integral with the nipple (3) both in rotation and axially, a tail (4) threaded at a first end and screw engaged with the threaded end of the nipple (3) at said first end, comprising coupling means for fastening to a valve, a synchronizer ring (5) coupled in rotation to the tail (4) and axially to the handle (8), the synchronizer ring (5) being axially movable relative to the tail (4) due to the rotation of the handle (8), wherein the handle (8) further comprises an opening mouth (82) and an external wall (83) and an internal wall (84) ending at said opening mouth (82), which define a housing channel (89), in which there are provided:
- first abutment surfaces (85a,85a') radially extending in said housing channel (89) from said external wall (83)
- second abutment surfaces (86a,87a) radially extending in said housing channel (89) from said internal wall (84),
said synchronizer ring (5) being provided with at least one synchronizer tooth (52,53) intended to abut at least with said second abutment surfaces (86a,87a) to define stroke end angular positions of the handle (8)
and wherein the head (1) further comprises a limiter ring (6) couplable in rotation to said synchronizer ring (5) through selective connection of the former on the latter, said limiter ring (6) being provided with at least two limiter teeth (62,63) that, when the limiter ring (6) is connected on said synchronizer ring (5), are housed in said housing channel (89) and are intended to abut with said first abutment surfaces (85a,85a') to alternatively determine either intermediate stroke end positions of the handle (8) or a lockout condition in rotation of the handle (8).</p> |
