Booster Pump Hook up

[hillegom]

With your two ro systems, (don't know about the life of your sec. membrane doing this),you are making about 100gpd with about say, 60 psi. (don't know the psi the membrane manufacturer uses to calculate gpd)
100gpd divided by 24 hrs means that you get about 2 gals per hour. The pump you are useing pumps way more than that and has what top pressure? So it is working very hard to keep its top pressure and making a lot of noise.
As power tec has it, there is a high pressure shutoff and a low pressure turn on for the pump. This will let all your components in the system last longer and not be overpressured.
Your well pump turns on at 28 psi and off at 55 psi. Your add on pump for the ro will bring your pressure higher so that the ro membrane can operate efficiently. How high does your pump keep the pressure?
What I read on the net, the booster pump should bring up the pressure to 70-80 psi to keep the maximum efficiency on the ro membrane.