Replacing the compressor tank drain valve

by Dave
(Jackson, TN USA)

The compressor tank drain valve on bottom of tank broke off. Is there a replacement?


Where can one find a replacement tank drain valve for the #40400? The original is cheaply made, easily broken.
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The issue is can you unthread the broken tank drain valve from the tank?

If so, it were my compressor, I would thread in an elbow, run a piece of copper or poly tubing from the elbow out from under the tank, and install a mini-ball valve so that I could drain the tank more conveniently.

Tank drains are available from many sources. Click on the link "Air Compressors &
Compressed Air
Equipment
Available Here!" at the bottom of either side column. Click on Tanks. Click on tank drains for some of them.

Cheers,

Bill

Comments for Replacing the compressor tank drain valve

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Feb 25, 2014
my cheap fix for HF 40400
by: Dave

With no luck in finding a replacement drain valve, I made my own. I had to use an EASY-OUT to remove the old threaded bushing. I replaced it with a 1/4in nipple, then attached a 1/4in 90d elbow. To the elbow I screwed on another 1/4in nipple. This was followed with a ball valve. Be sure to use Teflon tape on the threads. The parts cost me about 15.00, and this fix works fine.

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replacing an air compressor tank with a portable air tank

Tha tank on my Nikota 5 gallon twin tank air compressor in leaking.

Could I replace this tank with a portable air tank? They seem fairly cheap, but the ones I found have a hose with a schrader valve for filling up at gas stations, etc.
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A tank that's rated for compressed air is a tank that's rated for compressed air. So yes, you can use a portable tank as a replacement for your compressor tank, as long as the pressure rating is the same.

You will need to change the plumbing on your compressor to send the air from the compressor head into the new tank, through a check valve, and replumb the portable tank with the same discharge setup as your present compressor.

It's not insurmountable, but quite a task you've set out for yourself.

Make a list of all the things you need and price them out. You may find it a whole lot easier and maybe not so high a cost to buy the proper tank?

Cheers and good luck,

Bill

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Use Propane Tank For More Air Storage on Compresser?

by Wayne
(Boise, Idaho)

I have a Central Pneumatic 2.5 h.p. compressor with a 8 ga. tank. I need more air and was wondering if I can use an old propane tank to plumb into my compressor tank? I can't really afford a larger compressor right now.
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Hey Wayne... you can use any compressed air storage tank you want, but if it were me, I'd first make sure that the tank I wanted to use for additional air storage was rated for at least 50% higher pressure than it would ever see from my air compressor.

Since I do not know the pressure rating of your used propane tank, I cannot recomment that you use it until you are sure of its certification.

You know, you can often get a used DIY type air compressor pretty inexpensively, particularly if it is one that does not work. What you can do is use a non-working compressor air tank as an additional reservoir for air for the working compressor.

Cheers,

Bill

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