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Compressed air compression fitting size

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Compressor Pump Speedaire/Grainger Part: 5Z405 The outlet is at a Tee…

Threaded Air Outlet On Air Compressor Pump
Threaded Air Outlet On Air Compressor Pump

The pipe going into it is 3/4″ O.D. What is the fitting that I can use to attach to this outlet. It is a compression fitting but I can’t figure out what to use. I have attached a pic of the outlet. Any info will be greatly appreciated. Thank you.

Thanks for including the photo. When I increase the screen image size it stays clear and I can see the threads.

What I don’t know is what this line is for. You say ” the pipe going into it is 3/4″ O.D.”. Was it or is it the line from the pump to the tank?

I would like to know what was/is normally threaded on to this male thread to be sure.

However, a quick fix is to visit the plumbing store in the brass fittings section and buy a female to female bushing that fits this thread.

Then you can thread a male fitting of any size needed with reducers into the other.

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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