Kellogg 452 Unloader -- Operation?

by franklynberry
(milwaukee, wi, usa)

I'm looking for troubleshooting/theory of operation info on a

Kellogg-American Type 452 -- not a knock-off. I have a parts breakdown,
and found a crack in the #76281 CU valve assembly, which I think
sends blow-off signal pressure to the remote blow-off valve.
Here's a link to the fitting picture:

I've had no luck finding an owner/service manual on the internet.
Any help is appreciated.


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Aug 10, 2017
Service truck compressor
by: Jr

I have a 452tv builds air slow ( Thanks for your comment, though it seems to be about a different compressor problem than the original post. Please start a new post in this forum and we will try to get you some answers about fixing your specific compressor problem. Thanks. - Moderator )

Nov 24, 2012
Found it.
by: franklynberry

Here's a summary document: centrifugal unloader valve theory of operation.

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