lock
    </h1>
<hr>
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<div class="purpose">
        Purpose
</div>

<p>
    This block can be used to simulate the performance of a valve using basic
thermodynamic equations, properties, and table-lookups. This block
takes a more physics-based modeling approach than the other Valve block.
</p>

<br>
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<div class="background">
        Background
</div>

<p>
    Across the valve, the total temperature