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Size of the air compressor discharge port

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Help me about plumbing size of air the compressor discharge port?

by Yankeeflyboy

I recently purchased a 60 gal stationary compressor. I plan to run 3/4″ copper lines throughout my shop. The discharge port on the compressor is 3/8″ in a large reducing bushing, apparently 2″.

Would it be advisable to replace this bushing with a 2″ to 3/4″ or just to use an adapter to increase from 3/8″ to 3/4″?

It just seems strange that the port is so small.

Compressor Air Tanks Www.about-Air-Compressors.com
Compressor Air Tanks www.about Air Compressors.com


A 3/8″ hole will flow a lot of air, Yankeeflyboy.

However, if this were my compressor, I would certainly remove the 3/8″ and use the 2″ to 3/4″ reducer bushing to remove any flow restriction that may be caused by the 3/8″ discharge port.

Why reduce the flow through the 3/8″ and then plumb back up to a larger pipe? Go with the 3/4″. It can’t hurt, for sure.

And, I applaud the use of copper as an air line for all the reasons written about on the pages of this site.

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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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