Kind of but you don't need to go into those measures orange shark. When N1z said "without loosing quality" he's correct but I think he confused you with his choice of words
The 30GPD rating means that if the RO unit is supplied with the EXACT rated mainline water pressure that it's designed for, it will produce 30 gallons of water per day. If you go over that rated pressure (almost impossible with tap systems) you'll get poor quality water, but if you go under that rated pressure you just get less water out. Typically they're designed/rated for up to 80-100PSI. Most tapwater systems are 30-50PSI. Typically you get good water flow through the unit provided you're over 30PSI. If you're significantly under 30PSI cause you're on well water or really far from your pumping station, you may need a booster pump but that is rarely the case.
Temperature of the inlet water also effects the flowrate. At higher summertime tapwater temperatures you'll get significantly higher flowrate than during the dead of winter. However beware, going much over 80F can damage the membrane, so never ever run it off your hotwater supply, always coldwater tap.As for keeping the membrane wet; So long as you're running the filter every week or so and not actively trying to drain it out, it'll remain wet. Membranes decomposing from drying out is rarely a problem with hobbiest's usage rate of RO units.
Lastly, invest in an RO unit that has a "flush kit" or "flush valve" that comes with it or installed with it, AND a TDS meter. Flushing for 10 minutes once a week before you make RO water will greatly increase the life of the membrane. Use your TDS meter also to tell you if there's a problem with the system... If the RO discharge water is significantly high, it probably means the membrane either needs flushing or replacing.
Hope that helps
Oh, forgot to add two other things. Generally, try and buy a unit with a membrane rated to the size of your tank. So if you have a 30g tank, buy a 30GPD membrane. ~50gal tank, buy a 50GPD membrane. If you get a unit rated too small you'll be kicking yourself cause it'll take forever to make the water you need
And finally, invest in a garden hose timer to prevent your own human mistakes. You hook up the timer between your tap and the RO unit. Set it to run for say 2 hours, and you can leave it. After 2 hours the water shuts off the RO unit so you don't make too much water
. Prevents the age old problem of turning the RO unit on, getting distracted with doing things around the house, going to sleep, waking up the next day, going to work, all while your RO unit's still running
Edit, damned forum monkeying with my post
