Express Detail Cart Build

I want to build this cart.

So.....here is my first question, how do you get the 4 cornelius tanks to have pressure from 1 air hose in? I know you can pre-pressurize them but I do not think thats what this cart does. Any help would be much appreciated.

My goal with this cart is to be able to completely clean one side of the car and then move the cart around and clean the other side. This will also eliminate clutter. I should take a pic of all the way I am working now, extractor, air hose, vacuum, pc w/ carpet brush and my cart with a million spray bottles! Far from professional looking.



here is a setup from a tint forum

 

you could use an air manifold setup. it would have to have 1 input and 4 outputs that either only open at a certain pressure and then close at a certain pressure or be done manually. automated would be more expensive but not too hard to build, just need to know what to buy and how to plumb it.

edit: the description says individual air regulators.

edit part 2: after looking at it closely, it wouldnt be very hard at all to build the air regulator set up the way they did it. i was thinking more high tech, but that means more money. hell i could even add a blow gun attachment to blow out water from cracks and crevasses pretty easily

 

Air Pressure - Regulator - Tank - Hose/Nozzle/Gun

I think I get it, the regulator is reading what is stored between it and the tank not the pressure between the regulator and the compressor! Which is obvious but I never put that together. So in a hvlp gun when the trigger is not pulled if it says 20psi that is what is stored between the reg. and the trigger. Is this correct?

 

yes the reg determines what is stored in the tank. its all in psi, pounds per square inch. so if you set the reg for 20psi, you have 20 psi in the tank. you would have to add a reg to the out put of the tank, to the hvlp gun, to reg the psi coming out. if you dont you will get drops when the tank tries to refill. its not the best way to set up a pressurized system if you are dealing high psi, but its probably lower pressure. if you go high, like 200 psi then you should have a safety to close what comes into the tank so you dont over pressurize the tanks. thats what i was talking about high tech. i have some experience with hydraulic controls and air is very similar, except the psi in the hydraulic systems i have dealt with were in the thousands of psi