Quote:
Originally Posted by sphelps
Well most tanks are 4.4 gallons and if they are properly charged (which you can check and adjust) they should empty completely if allowed to. But that's not that relative because a tank doesn't change the run time on the RO. Without a tank the RO runs until you fill your glass, sump or whatever is full but it takes a while to do so. With a tank you fill your "whatever" quickly, draining the tank, while the RO runs until the tank is full again. So the duty cycle on the RO is identical.
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Thats what I mean, A pressure tank RO sys will come on/off with every glass you pour. What's the difference if plumbed direct to sump? still running the RO for a glass or 2 at a time. I was refering to Possible membrane wear on short running cycles. But if the Pressure tank ones do it all the time, then there can't be an issue with it.