Devilbiss Dv1 base coat gun issue

E

Elimak

New Member
I just recently bought this gun from eBay and today I used it while spraying base on a panel and down where the air pressure regulator is water was seeping through. I know for sure this shouldn’t happen so I checked if it was lose and it wasn’t. Is there a fix to this?
 

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Your air supply is also supplying some water. Water vapor enters the compressor because of humidity in the air, and must be removed with things like a water trap and desiccant, and/or refrigerated dryer. There are many methods of condensing water out of the compressed air and removing it, and many threads here on the site describing how to do it.
 
crashtech said:
Your air supply is also supplying some water. Water vapor enters the compressor because of humidity in the air, and must be removed with things like a water trap and desiccant, and/or refrigerated dryer. There are many methods of condensing water out of the compressed air and removing it, and many threads here on the site describing how to do it.
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So the gun itself isn’t the problem and I won’t have to return it, the problem is with the compressor having to much water in it?
 
JC Daniel said:
If you have water seeping through the regulator then your problem starts at the air system, do you have enough cfm's ? Do you have anything in the supply lines for water separation?
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Enough cfms, probably not im a diy painter at home in the garage and I don’t have room for a big shop compressor, so I connect two compressors together one in the garage and one in the backyard to get me enough consistent air pressure to spray.
I know this sounds like a not good idea to the professionals but I don’t take on jobs for my self like painting a whole car to be exact just a small couple panel job is all I take on.
But yes on both compressors I do have filters connected to them.
 
Elimak said:
So the gun itself isn’t the problem and I won’t have to return it, the problem is with the compressor having to much water in it?
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Well, you might have a tiny air leak and that is where you are noticing the water condensing out of the compressed air. You might have a small problem with the gun but it's not the source of the water. If the air leak is not fixable and it is large enough to be objectionable, you might want to send the gun back. Depends on how good of a deal it was, perhaps.
 
crashtech said:
If you are not willing to spend time and money on making sure you have clean dry air, your painting life will be filled with problems, especially with modern high solids finishes.
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Ok I will keep that in mind, and I need to release all the water out of my compressor and see if any of liquids still run out of the gun then I’ll be sending it back.
Thanks again
 
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Elimak said:
Ok I will keep that in mind, and I need to release all the water out of my compressor and see if any of liquids still run out of the gun then I’ll be sending it back.
Thanks again
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If you are thinking of sending it back, I might be interested in that DV1. what do you want for it? Feel free to PM me.
 
There is nothing wrong with the gun. Water was seeping there at the regulator because it wasn't a perfect seal. Your issue is that water is condensing between your compressor and gun. What is your air line setup like? How many feet between the compressor and your regulator? Like Crash said, until you solve the water problem you will have issues with anything you try to paint.
 
Water traps by themselves will help but you need at least a desiccant system to have a chance at painting. I run a one gallon desiccant with an motor guard M60 filter then a water trap with a guage. I have 5 6 foot copper drop legs with valves and about 50 feet of 3/4 copper before the filters and it works good for me.
 
JC Daniel said:
Water traps by themselves will help but you need at least a desiccant system to have a chance at painting. I run a one gallon desiccant with an motor guard M60 filter then a water trap with a guage. I have 5 6 foot copper drop legs with valves and about 50 feet of 3/4 copper before the filters and it works good for me.
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Ok I’ll have this in mind, I’m trying to get a shop compressor set up in the near future and knowing that I need all these water trap filters is a good lesson learned with this gun. Would you mind sending me a picture of the setup you have so I would have a picture in mind of what I need.
 
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This is not my set up but will show what you need, I have the motor guard m 60 in the top photo paired with a desiccant filter bottom photo and a gage in line right before my hose for painting. I remove a lot of water 50 feet before these filters with drop down legs with drain valves.
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Yes water in air. It will leak from places like that. Back when I was just out of school not knowing any better, I remember painting cars with a hose directly off the compressor. I used to get water spitting out of my coupler, regulator connection, etc. So what did I do? What any young kid would do…I wrapped my connection with paper towels and tape to keep it from dripping on horizontal surfaces hahaha. NOT recommended. Just get a dryer, filters, copper pipe, something or all of the above. There’s lots of research to be done on which setup you wanna use.
 
Filter setup in JC's second pic is useless because it is so close to the compressor. You need a minimum of 50 feet between the compressor and your first filters. You should have water traps in the lines as well The air needs distance to cool. If not it will condense in your hose.
 
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