Invention Grant
US09341277B2 Method, system and apparatus for automatic calibration of a needle valve device in a pressurized flow system 有权
用于在加压流动系统中自动校准针阀装置的方法,系统和装置

Method, system and apparatus for automatic calibration of a needle valve device in a pressurized flow system
Abstract:
Exemplary embodiments are directed to apparatus, systems and methods used in connection with a needle valve device operating in a pressurized flow system. The apparatus, systems and methods provide for automatic positioning of a needle relative to a seat in the needle valve device to provide consistent calibration with minimal user interaction after a maintenance event or upon a start-up of the pressurized flow system. The apparatus, systems and methods utilize a calibration collar secured to a shaft of an actuator within the needle valve device. The calibration collar includes one or more locking mechanism and a spring.
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