by Joey
(New Brandeis, tx)

Sullair compressor is reading around 140 psi sump pressure while unloaded and blow down valve is releasing. Why isn’t sump pressure not dropping?

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Sullair 185 air compressor
Sullair 185 air compressor

Sullair high sump pressure
by: Doug in s.d.ca.

What model of Sullair is yours a 185.. what?

What is the nominal operating pressure?

Is pressure normal when loaded?

Is the intake closing when unloading?