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Air doesn't stop coming out of my Patriot 105 airbrush nozzle

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  • Member since
    November 2008
Air doesn't stop coming out of my Patriot 105 airbrush nozzle
Posted by Arespontus on Tuesday, June 27, 2017 7:01 PM

Hello,

I have two airbrushes

1. Anthem 155

2. Patriot 105

and an Iwata smart jet compressor.

My Anthem 155 airbrush seems to be working fine however I can't get really small lines.

The Patriot 105 however is behaving strangley.

I have completely disassembled the patriot 105 and rebuilt it 3 different times.

When I turn the air compressor on air will continualy come out of the Patriot 1.5 nozzle and will not stop.

I am using windex as a medium to spray with and it seems to spray just fine. Its just the flow of air that doesn't stop. Sometimes when I press down and pull back on the trigger and release, the air flow will stop. However that seems like a waste of paint, to do that every time I want to stop painting.

I have watched most of the Patriot 1.5 videos on ebay and I can't find anything to help me with this.

Thank you,

 

  • Member since
    September 2012
Posted by GMorrison on Tuesday, June 27, 2017 7:06 PM

I think you have a mismatched needle/ nozzle combo.

 Modeling is an excuse to buy books.

 

  • Member since
    August 2005
  • From: Sydney, Australia
Posted by Phil_H on Tuesday, June 27, 2017 7:17 PM

It sounds like you have a sticking O-ring in the air valve assembly. This can happen because of paint leaking back into the air valve, which is rare, or cleaning solvent finding its way back into the air valve.

If you soak the body of the airbrush in a solvent when cleaning, never immerse the air valve. This may cause the O-ring to swell, causing sticking. If you have access to some Badger regdab lubricant, remove the air valve from the airbrush body and apply a little to the O-ring. Alternatively, a little silicone lubricant will also do the job. 

EDIT: Don't use a mineral oil based lubricant (eg. 3-in-1 oil) as this will cause the O-ring to swell and/or degrade.

  • Member since
    January 2017
Posted by ecotec83 on Tuesday, June 27, 2017 7:44 PM

Second trying the lube on the air valve. I had an incident with my new airbrush when some IPA leaked into the air valve area causing it to stick really badly. Panic rather quickly set in thinking I had totally ruined my brush Crying. A drop of paasche lube onto the air valve was enough to solve the issue.

  • Member since
    April 2009
  • From: Longmont, Colorado
Posted by Cadet Chuck on Tuesday, June 27, 2017 9:02 PM

My Iwata has acted like that since the day I have bought it.  I have learned to work around it.  Piece of junk.

Gimme a pigfoot, and a bottle of beer...

  • Member since
    October 2008
  • From: Fullerton, Calif.
Posted by Don Wheeler on Tuesday, June 27, 2017 10:28 PM

The guys have given you good advice.  If the O-ring has swollen from solvent, let it air out a couple days and it may shrink back.

Concerning Chuck's Iwata: The Iwatas have an O-ring in the body that the trigger pin passes through.  They need a tiny bit of lube once in a while or they will stick.  Remove the trigger and use a toothpick to put some Regdab or Superlube in there.  You shouldn't have to do this too often.

Don

https://sites.google.com/site/donsairbrushtips/home

A collection of airbrush tips and reviews

Also an Amazon E-book and paperback of tips.

  • Member since
    July 2013
  • From: Chicago area
Posted by modelmaker66 on Tuesday, June 27, 2017 11:39 PM

Everyone is correct with the o ring. A little lube will fix it. And Iwata airbrushes are far from a piece of junk.

  • Member since
    November 2008
Posted by Arespontus on Wednesday, June 28, 2017 7:53 AM

Thankyou for your replies everyone.

So I'm beginning to believe that I did something I shouldn't have.

After I use my Patriot 105 I emptied the gravity cup of paint and then

would fill up the cup with rubbing alcohol and windex and let it sit overnight.

Something I learned on youtube.

So now I'm going to empty the patriot 105 and let it sit, and see if that fixes the problem.

Scott

  • Member since
    October 2008
  • From: Fullerton, Calif.
Posted by Don Wheeler on Wednesday, June 28, 2017 10:54 AM

There is some bum dope on YouTube.  I once saw a guy use vice grip pliers to pull a stuck needle out of an airbrush.  In one, a woman pulled an airbrush completely apart to soak it after every use.

I wouldn't soak an airbrush in Windex.  If it contains ammonia, it will eventually damage the chrome.  Rather than soak, you would be better off just to take the time to clean the dirty parts.  It really doesn't take that long to do a proper job.

Use a small allen wrench to disassemble the air valve.  Don't lose the little spring. Clean the inside of the valve body with a pipe cleaner and solvent or airbrush cleaning solution.  Let the pin sit out in the air for a day or two, then try it and see if it works better.  If it doesn't, you probably will have to replace that little O-ring.

Don

https://sites.google.com/site/donsairbrushtips/home

A collection of airbrush tips and reviews

Also an Amazon E-book and paperback of tips.

  • Member since
    November 2008
Posted by Arespontus on Wednesday, June 28, 2017 11:20 AM

Thank you Don I appreciate the feedback

  • Member since
    July 2021
Posted by BuzzTakedown on Friday, July 23, 2021 5:06 PM
I think I figured it out. You've lost a very small spring that hides within the hose valve assembly. Without the spring, the valve doesn't close. I just figured this out after mine was doing the same thing. I disassembled it, dropped a small bit, and found the spring in the process.
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