#176 Oct 16, 2026 1 min read

Can a transfer line make your heater fire harder?

Same crude, same flash zone. Two transfer lines. One heater has to work much harder.

Hi ,

Quick design question I posted on LinkedIn today (illustrative numbers, not a specific plant):

Two transfer lines feed the same flash zone at 1.5 barg (21.8 psig). Line A drops 0.7 bar (10.2 psi). Line B, smaller, drops 1.6 bar (23.2 psi). To deliver the same flow, the heater on Line B has to run at 3.1 barg (45.0 psig) at its outlet instead of 2.2 barg (31.9 psig).

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