Refined Globe Valve Thrust Prediction Model to Bound Midstroke ...
Refined Globe Valve Thrust Prediction Model to Bound Midstroke ...
Refined Globe Valve Thrust Prediction Model to Bound Midstroke ...
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<strong>Bound</strong>ing <strong>Thrust</strong> Zone - Applicability<br />
When is BTZ necessary?<br />
<strong>Valve</strong> Parameters<br />
• Flow Over the Disc<br />
• Opening Stroke<br />
Actua<strong>to</strong>r Parameters<br />
• Spring return (i. e., not<br />
applicable <strong>to</strong> double acting<br />
without spring actua<strong>to</strong>rs)<br />
Notes:<br />
Potential non-conservatism<br />
non conservatism<br />
can exist regardless of<br />
actua<strong>to</strong>r action (i. e., reverse<br />
or direct).<br />
• Actua<strong>to</strong>r action only<br />
determines if the air stroke<br />
or spring stroke corresponds<br />
<strong>to</strong> the opening stroke<br />
Slide #9 #
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