375 H compressor regulator issue?

by Colton
(Mendon, Michigan )

2010 Sullair 375H CA3

2010 Sullair 375H CA3

2010 Sullair 375H CA3

Used Sullair compressor with 976 hrs

375 can comoressor shows 100 psi on low and almost 200 psi on high. The blowoff valves keeps blowing excessive pressure off. Is this an issue with an adjustment of a regulator?

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Sep 26, 2018
375 H terminology?
by: Doug in s.d.ca.

Do I understand you to be saying that when the unit is on low, it's OK, but when switched to high it goes over-pressure and blows the PRV?

If yes, then high pressure regulator.

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