| 摘要 |
A valve (1) has a magnetic actuator (25), which is provided with a sleeve (18) extending along an axis (12), with a movable core (27) made of ferromagnetic material and axially guided by the inner surface of the sleeve (18), and with a magnetic stator (26) arranged in fixed position around the sleeve (18); the stator (26) has a housing (35) made of ferromagnetic material, a coil (36) facing the external surface of the sleeve (18), and two magnets (37,38), which are aligned with the coil (36), are arranged on opposite axial sides of the coil (36) and have a same pole aimed against each other; the valve (1) has a conduit (9) with a valve seat (48) axially facing a plug member (49), which is coaxial and fixed with respect to an end portion (44) of the core (27), so as to open/close the valve seat (48); the core (27) has at least one passage (45) allowing a fluid to flow through the core (27) and comprises two end portions (43,44) of larger diameter. |
