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Central Pneumatic Model 388897 Regulator Diaphragm Leaking

Published Categorized as Air Compressor Leaking Air, Air Compressor Parts Required, Air Pressure Regulator Guides, Central Pneumatic No Comments on Central Pneumatic Model 388897 Regulator Diaphragm Leaking

by Bob
(Frisco, TX)

Why A Compressor Regulator Leaks Regulator Diaphragm
Why A Compressor Regulator Leaks Regulator Diaphragm

Central Pneumatic 2 HP, 4 Gal, Pancake Air Compressor Model 388898 (Harbor Freight Item #90221)

I need a replacement diaphragm for the air pressure SW/Regulator.

Any body have a source?

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Replacement diaphragm
by: Bill

I’ve never had much luck chasing down parts for these low end air regulators, Bob.

Since I just checked and you can buy the whole regulator on line new for $17.50 plus shipping, it’s hard to think that you can find the part, then spend the time necessary to tear down and rebuild the old one, for less than the cost of new.

If someone does have a source for regulator parts though, we’d like to share that news.

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Pressure switch diaphragm replacement
by: Abe

Just opened mine up, and its busted as well…in almost the same way as yours. has anyone tried cutting an old truck tire inner tube to the same shape. I imagine it would probably do the job. I’m gonna try it tomorrow.

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Use and Old Tube
by: D-MAN

I just cut the diaphragm out of an old medium duty motorcycle tube and it works like a champ. Just saved myself 20 bucks and the rubber from the tube seems like it is higher quality.


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By Bill Wade

About Air Compressors has been helping folks with their Air Compressor Problems since 2002 online. We're a community of DIY and Compressed Air professionals who are keen to support everyone across the globe with their air compressor issues and troubleshooting. Whether you're trying to identify an old air compressor, or troubleshoot an error code on a sophisticated new industrial air compressor - the community at About-Air-Compressors.com is here to help you

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