Air fitting on a tank / Plumbing Compressed Air

by John

I am trying to mount an air fitting to a tank.


I would like to know how to seal it properly so that air does not leak up the threads of the fitting.

I need also to mount a pressure gauge which will have the same problem: How to prevent leaking around the threads of the gauge.

I have tried many different methods, but all of them still permit air leaks.

Any help or advice will be appreciated. If this is unclear or not specific enough, please ask for further clarification.

Thanks,

J. B.
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Hello John:

You don't indicate what methods you've already, and unsuccessfully, tried to stop your fitting threads from leaking...so I'm probably going to tell you about some you've already tried.

First off, products used for thread sealing do two things. They lubricate the threads so that the fitting can thread farther into the female boss, and then, depending on the type of sealant, they “set up” creating a strong, leak proof seal.

Many brand of modern air fittings come with a thread-sealant already installed on the fitting threads, so the user doesn't have to do anything to get a good thread-to-thread fit and seal.

That thread-sealant is Teflon based, and is available at hardware stores for home and industrial users.

Why does your fitting leak?

Is it possible that you're trying to thread a metric fitting into an imperial-threaded boss? For example, a 1/4” metric fitting will start to thread into an imperial 1/4” boss, but there won't be enough thread contact when it tightens to prevent leaks.

Are you using a sealant of some type? If not, do. That will make all the difference.

Last, are you able to screw the fitting in tightly? They have to be more than hand tight usually.

I hope this helps, John.

Cheers,

Bill

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Adding a second tank to a system

by Shawn Chase
(Gloucester, Va)

So I acquired two 80 gallon compressors for a real bargain. One of the compressors has a bad pump and motor. I want to use the tank as a extra storage vessel but not sure how to tie the two together. Any suggestions. I am just at the starting stages of building a hardline system so I am open to anything at this point.
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You might look at the Tank section on the sitemap page, and read the pages about adding a second tank.

B.

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eagle river6 gal - tank drain missing?

by James
(Colorado)

eagle river6 gal - I have a brand new air compresssor and cannot get it to work and take air.

Turn it on and air blows out bottom of tank from some part it has no plug or valve on it justa nut and hole. What is this and how can I get my compressor to work thanks it is a eagle river6 gal

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James, look on the site map for tank drain and have a look at these pages.

From what you are telling me, your tank drain is missing the valve.

To fix it, measure the thread diameter. Go to the NPT page and compare your measurement to the sizes there to be sure that it's an NPT thread in the drain.

Go to your plumbing store and by a brass 90 degree elbow that fits this hole. Add a foot or so of copper tube (1/4" is lots) and then add a shut off valve at the end of the tube.

You can now shut off your tank drain, and it's easily accessible to drain the water from the tank each time you shut down your compressor.

Cheers,

Bill

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Adding an air tank to a Senco pc1010

by Weston
(Temecula,CA)

I read your post reference adding an air tank to a compressor. I'm interested in adding a 5 or 10 gal. air tank to a Senco pc1010 compressor.

Is there anywhere I can find detailed instructions or video on how to correctly and safely accomplishing this? Thank You
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Weston...

If you think about it, air is pumped into your compressor tank when the compressor is running.

Then, there is a discharge line, usually with a regulator in it (ideally it would have a filter too) and at the end of that a coupler into which you insert the coupler on your air line.

Now, to add a tank, you simply, empty the compressor tank with the compressor off (this is a good time to check the PRV), remove the discharge coupler and regulator from the discharge line, and re-plumb that discharge line into the in port of the new tank.

Then, teeing off the line that drops into the tank, re-install the regulator and discharge coupler at the new out.

That is the simple way. If you need drawings, then I would charge for that service. Use the contact form to reach me for details.

Also, the spare tank must be rated for compressed air pressures, of course.

Cheers,

Bill

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