A Load line shows the valve's pressure drop at different flow rates.

What is the load line in control valve?

Question Posted / carl_ellis

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Answer Posted / carl_ellis

A Load line shows the valve's pressure drop at different
flow rates. When graphed, the flow rate is typically on the
y axis, the pressure drop on the x axis.

Typically the load line starts high at low flow (high DP)
and decreases as the flow increases to a low DP when the
valve is wide open.

Carl Ellis
Measure First

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