RODI System - Osmosis Replacement Membrane GPD Rating

[hillegom]

My flow restrictor is just after the ro housing, in the line to drain.
About yours, you would have to ask the manufacturer, 450 is meaning less to me.
But if you get a new membrane, just buy a FR for it at the same time. They do wear out, or get clogged. My last one only cost me $1.50. Another time, they just threw it in. Guess that one they made the money on the membrane. lol