Originally Posted by Docsgsxr
Or even a manual hand cranked air pump would be even better to pressurize while we are making the point more complex for this person!
You asked what we thought about your idea. You got mixed opinions. Ultimately, it's your call.
Don't think the air compressor idea is worth a dang but in the water world they are called expansion tanks and yes they do provide extra volume to a piping system to keep a pump from cycling off and on and on the cold water side of a hot water heater because dumping cold water into a hot water heater/vessel creates expansion and contraction into the system that the vessel was not designed for (not pushed as much in residential) but can and will help.
A 3-gallon bladder tank after the pump gives you an extra 2-gallons of pressurized water before the pump has to work and if your pump has a down line pressure switch to activate it then it for best production needs to be after the expansion tank.
The air pressure in the tank from the factory is normally set to 15-psi of air on the outside of the bladder in the tank and will need to be adjusted to your water pressure whether pumped or street/campground. I chose a happy medium with mine. My pump does 55 psi and normal street pressure is 50-60 not for some camp grounds so my pump is ready no matter the connection.