VI. APPENDIX
The following tables are intended as a guide to determining the flow rates for the R4X40
series RO systems. All flows are in gallons per minute (GPM) with 77°F feed water.
Nominal flows for systems operating at 50% recovery with a feed water SDI < 1.
R4X40-1
R4X40-2
R4X40-3
Product GPM
1.5
3.0
4.5
Reject GPM
1.5
3.0
4.5
Nominal flows for systems operating at 50% recovery with a feed water SDI < 3.
R4X40-1
R4X40-2
R4X40-3
Product GPM
1.25
2.5
3.75
Reject GPM
1.25
2.5
3.75
Nominal flows for systems operating at 50% recovery with a feed water SDI 3 to < 5.
R4X40-1
R4X40-2
R4X40-3
Product GPM
1
2
3
Reject GPM
1
2
3
Summary of Contents for R4X40
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