| 摘要 |
A metering valve (40) presenting a shutter (67) for a discharge conduit (63), and an electromagnet (42) in turn presenting a fixed core (46) and a disk-shaped armature (43) detached from and sliding on the stem (69) by means of a sleeve (71). The stem (69) is guided by a bush (83), presents a flange (88) movable inside a swirl chamber (89) with a velocity damping effect, and is fitted, prior to assembling the armature (43) and the electromagnet (42), by means of a ring nut (59), which presses a flange (84), forming one piece with the bush (83), against the body (56) of the valve (40) via the interposition of calibrated washers (87) so selected as to define the travel (h) of the stem (69). <IMAGE> |
