The way they described the ECO compared to the Precision Apollo turbine (both use the same gun) is the Eco is for the guy who sprays in his home shop and for finishing projects etc. Their gun is a bit tricky as you can only adj spray pattern and fluid amount.ДЄfter I got used to the gun, I really do like the system and the gun. I have yet to find something it won't spray with the proper N&N and air cap. He said it will spray 95% of everything they sell. Talking to their finishing guy (who mixes the stains to custom colors and will match existing finishes almost exactly) He recommended the Apollo ECO 4. I took the class and was interested in buying the finish line spray gun. They specialize in products for staining finishing and repairing furniture. They run you through the different types of spray guns and stains and finishes. Prior to that I had a Accuspry conversion gun (used with a small 4 gallon compressor) The Accuspray was awesome but they got bought by 3m and they are no longer made and the spare parts are unavailable.Дont know where you live but if your in So Cal I highly recommend taking the finishing class at Woodrepair products in Orange. I have never wished I had a different system. The 7500 guns spray much better than the 5000 guns. I have never read about anyone else having this issue, so it may just be the way I am using the guns. I solved this by relocating the cup pressure supply line to a location to give constant pressure to the cup. They have check valves to prevent this, but they did not work for me. This also turns of the pressure air supply to the cup allowing pressure in the cup & finish to back up into the pressure supply line. Air only come out of the gun when you pull the tripper. This is because the 7500 guns are non bleeder guns. I had problems with finish backing up from the cup up into the cup pressure supply line.

I spray different types of finishes, but I spray mostly oil base polyurethane. The only complaint I have had with any of the systems is with the 7500 guns. My first Apollo system was an 1100 turbine with 5000 spray guns.ДЄ few years ago, I purchased a 1050VR turbine and 7500 atomizer guns. I have been using Apollo HVLP systems for about 27 years.

Apollo hvlp spray gun parts