ok... i dont want to spend alot of money for now. i just want to know how many gallon n hp i need to be able to paint.

 

you need to go buy the cfm rating. Some spray guns use 11cfm at 40 psi. You would want to get a compressor that is rated at 11cfm at 40psi in that case. Read about your spraygun and tools to find out their required cfm and get a air compressor accordingly.

 

U need to find out what SCFM your gun consumes. Then you take that number and get a compressor that makes a good bit more SCFM than that gun. That's the ideal scenario.

But real life isn't like that. The air tank is like your buffer so your compressor isn't running all the time. If you get a SCFM that's too low, your compressor wont be able to make enough air and you'll have to stop and wait for it to catch up. This can be bad because your mixed paint is on a countdown. But not everyone is spraying constantly.

A bigger tank will let you get away with a smaller compressor, but it takes longer to recharge. Let's say your gun takes 13 SCFM at 23 PSI, you will want a compressor that's about 4 HP if you want to do a lot of painting, but look for one that can do at least 12 or 13 SCFM at 90 PSI which is the usual figure. As for the tank, the bigger, the better. Don't get one of them pancake compressors they wont cut it.

Janos

 

mine is about 9.3 scfm at 40 psi and i sprayed at 37 psi with the trigger pulled and i was fine not to much waitng for the compresssor to fill


i have a craftsman 6 hp 33 gallon compressor


if you want to not wait you will probably have to get a 230v compressor to get the job done without waiting for the compressor to load up again and you wont have to look at a regulator at the gun every 5 seconds to make sure your air pressure didnt go down

which will cause imperfection in your painting bc to much paint will shoot out with no air ,

you knwo what i mena ... hopefully that helped