4
Reverse Osmosis System Layout and Components (continued):
VRO-4Q Filtration Process:
Filter Stage
Part Number Description
Service Life
Filter Color Code
1st
VRFQ-PP
PP Sediment Filter, 5 Micron
6 to 12 Months
Yellow Dot
2nd
VRFQ-CTO
Carbon Block Filter, 5 Micron
6 to 12 Months
Green Dot
3rd
VRFQ-RO
TFC Membrane, 50 GPD
24 to 36 Months
Blue Dot
4th
VRFQ-CTO
Carbon Block Filter, 5 Micron
6 to 12 Months
Green Dot
Replacement Parts
1st
Stage
2nd
Stage
3rd
Stage
4th
Stage
Black