| 摘要 |
A method and apparatus for directly measuring the thrust present on a valve stem wherein a valve actuator is operated to actuate a valve and to automatically shut off when a predetermined actuator condition is attained, the invention, including a tension load cell supported for coupling to the valve stem to provide a measurement of the thrust present on the externally accessible end of the valve stem to provide a valve stem thrust reading directly without the need to disassemble the valve, or actuator assembly, with minimal hardware requirements, and at low cost.
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