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How a Stage III Unit Follows the Dispenser: Start Signals, Delays and Run-On Times

A Stage III vapor recovery unit is not a machine that idles all day waiting for work. It follows the dispensers: it starts when fueling creates vapor worth handling, it pauses when the forecourt goes quiet, and it keeps running briefly after the last delivery to clear the vapor path. That follow-the-dispenser behavior is set

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Blower Inlet Screens and Prefilters on Stage III Units: Protecting Flow Without Choking It

Blower inlet screens exist because the air a Stage III unit breathes carries dust, insects, leaves and construction debris, and none of that belongs inside a machine built to tight clearances. The catch is that the same screen adds resistance, and a screen that is left to load up quietly steals the very flow the

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