PrevalPreval Val-Pack

I tried this product with the goal of spraying nitro lacquer on guitars.The spray pattern is round and not adjustable, and the product is not compatible with the after market nozzles enabling control of the spray pattern.Tests on scraps showed tiger stripping when the light hit the paint at the right angle.When the can starts to be empty, sputtering starts occurring.I did not have any quality issue with the product itself, and it might help in a pinch. But I could not really recommend it for any aesthetically pleasant finish.I spend $225 on a 6-gal 175PSI compressor, a 12oz paint gun and some accessories. The result is perfect. The 6-gal compressor is overkill for a small piece such as a guitar, so if money/space is an issue, a 3-gal should be enough.FYI, I add 1 part lacquer thinner to 4 to 5 parts lacquer when spraying color, and 2 part lacquer thinner for 4 parts lacquer when spraying clear. Lacquer flows easily and I do not have much orange peel.

These things are excellent to fill the gap between spray cans and a real spray gun. Biggest advantage is being able to spray whatever material you want. I just did a 30 sq. ft. piece of floor with a final coat of water-modified polyurethane varnish.Plan to EXPERIMENT before shooting your actual piece. Put the test piece in the same position as your work piece -- horizontal if that's how you'll do the work, etc. If the work's horizontal you may want to use the smaller bottles as they'll make it easier to avoid hitting the work.For slower drying materials runs and sags may be a problem on vertical surfaces: PRACTICE first.READ THE DIRECTIONS because several things in there are not obvious.Spray some solvent (mineral spirits, water, whatever) through your spray unit when done to flush it out so you can re-use.The pattern is round and rather small; there are better spray nozzles out there now and Preval ought to be offering them: A fan pattern would make it easier to get a uniform coat. But by practicing first you can do a good job with these.

Keep a close eye on temperatures and relative humidity, on larger projects (4 brake calipers and brackets), the can froze over and lost pressure. If I used a can for a couple minutes straight, it would stop spraying completely. I swapped cans (a REAL mess) and started again with a good spray pattern until THAT can froze over - repeat as needed to finish work.The pick up tube is TOO short and does not get all the product, 1 to .5oz of paint was left, and I had to use a brush to get the last bracket finished.Finally, it spits more than actually sprays. There was a texture to the final product, but since it was a cast part it really didn't matter - just a good thing to know ahead of time.

haven't seen them in years, but still just as good as they were then. I needed to repair some rotten wood with wood hardener and the Preval units are the best at getting the hardener into all the grain and hidden spots without investing in a compressor and spray gun. And, no need for cleaning after the stuff hardens....just toss the bottle and the propellant unit and replace it.....

Bought the Val-Pack, and none of the units work. They could not even spray water. Bad product do not waste your time or money on this. It does not work even a little bit.