Zoomer or anyone else that knows air compressors

truespode

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#1
I have a Black Max 5hp air compressor. It came with the house I bought and is completely piped in.

I have a small leak. I can barely hear it. It is coming from the vavle right beside the off/auto switch. I have tried adjusting the valve and it reduced the leak to a very, very low sounding hiss (it used to sound really bad and would deplete 150psi of air pressure in less than 15 minutes).

Is this normal or do I have something wrong? If there is something wrong what should I look for?

Thanks
Ivan
 

High Lord Gomer

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#2
I would take all of the fittings off and put them back on with teflon tape. That has solved air leaks for me before.

(Well...not *all* of my air leaks! :scream: )
 

Philip

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#3
I had the same leak with mine. *TEFLON* just like Gomer says.
 

Treejumper

2 wheeled idiot
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#7
Must be air compressor breakage week. Ours in the shop makes a funny sound and never fills the storage tank, might be the rings.
 

Jaybird

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#8
A 1cfm @ 100 psi leak could cost you around $500 a year if you keep feeding it.
Once you find the problem, then you will probably find that the root was contamination in the system. It is very important to rid the system of the water it captures. If the tank and lines have water, oxidation is sure to follow and foul up things.
The optimum situation would be to have a drain set-up at your tank that would automatically discharge much of the water.
You could also be sure you open the petcock at the bottom of the tank and release water whenever you charge the tank.
It's probably best, if you don't do an automatic drain, to empty your tank of air when you are done using it.

There is ten times as much water in a cubic foot of compressed air as in the atmosphere. 80% humidity at SL is Noahs flood in your compressor.
 

Neil Wig

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#9
Is the leaky valve the one with the lift lever on it? This would be the pressure releif valve, intended to prevent overpressure of the system.

If it's leaking, replace it, don't fiddle with it, or try to McGyver a solution. That fancy little valve is what seperates an air compressor from a bomb.
 

truespode

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#10
I believe that is the one.

Ok, now I have to figure out how to replace it. Is there any good sites out there that has some more info? I have the manual but have not found anything but part numbers to help me so far.

Thanks
Ivan
 

Jaybird

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#11
It wouldn't hurt to try and clean it with kerosene. It probably just has a piece of rust holding it open slightly.
You may be able to dislodge it by working the poppit a few times.
 

Zoomer

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#12
Sorry Ivan, can't be of much help to you on this, like Jaybird said, probably some junk under the valve holding it open, Could try back blowing the vavle (if you had an air compressor :laugh: ) use a portable tank?

Gomer can fix it, he can fix anything ....ooppps did I say anything? cr..... :eek:
 

Neil Wig

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#13
Drain the compressor tank to ZERO, then unscrew the pressure relief valve. Take it to whomever sells the compressor, and purchase a new one.
You could try turning the little lever back and forth a couple times....kinda lapping it into it's seat. All it is is a needle valve with a spring that holds it seated until an over pressure condition exists. Just make sure you don't block the discharge of the valve, or pound it into the seat to get rid of the leak.
 

Rooster

Today's Tom Sawyer
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#15
A 1cfm @ 100 psi leak could cost you around $500 a year if you keep feeding it.
Uhhh, I think we are all smart enough to flip the switch when done so it doesn't run every fifteen minutes :p