| 摘要 |
The valve operator assembly is provided for a valve and comprises a housing (18), an operable wheel (20) rotatably mounted with respect to said housing, and a transmission mechanism (22) comprising a translating screw (24) provided with an outer thread, and a rotating nut (28) surrounding and coaxial with said screw, said nut being provided with an inner thread (30), said transmission mechanism being adapted to convert rotation of said nut into axial translation of said screw. The assembly further comprises an outer sleeve (23) radially disposed between the housing (18) and the nut (28) of the transmission mechanism and provided with an inner thread (50) cooperating with an outer thread (31) provided on said nut. The wheel (20) is directly mounted on the outer sleeve (23). |
