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Commercial water filtration unit with two tall blue housings and three pressure gauges

Reverse osmosis system

RO Systems International COM-II-800S Replacement Filters

The COM-II-800S Reverse Osmosis Compact II Light Commercial System is designed to treat 800-1000 gallons per day. The 3-stage system is made for light commercial applications and features filter pressure gauges to monitor water pressure throughout the system, a storage tank pressure gauge to prevent tank overflow and a motorized pump to maximize system output.

See the replacement schedule

Compatible parts

Everything that fits the RO Systems International COM-II-800S

Suez Purtrex 93047 5-micron polyspun sediment filter, 2.5 x 20 inch, for standard 20-inch housings
Suez WTS
Suez Purtrex 93047 Sediment Filter 5 Micron 2.5 x 20 in
(7)
$13.99
Meets FDA requirements for food and beverage contact
Omnipure OMB200-5m 5-micron carbon block filter, 2.5 x 20 inch
Omnipure
Omnipure OMB200-5m Carbon Block Filter 5 Micron 2.5" x 20"
(2)
$31.99
Reduces chlorine, taste and odor
NSF 42 Certified
AXEON HF1 - 4021 RO Membrane 150 PSI 1000 GPD 200378 200378 - ESP Water
Free Shipping
AXEON
AXEON HF1-4021 RO Membrane 200378, 1,000 GPD at 150 PSI Test Pressure, Nominal 4 x 21 in
(1)
$271.00
Thin Film Membrane (TFM)
AXEON HF4 - 4021 RO Membrane 100 PSI 1000 GPD 4" x 21" 200390 200390 - ESP Water
Free Shipping
AXEON
AXEON HF4-4021 RO Membrane 200390, 1,000 GPD at 100 PSI Test Pressure, Nominal 4 x 21 in
(0)
$277.00
Thin Film Membrane (TFM)
AXEON HF5 - 4021 RO Membrane 80 PSI 1000 GPD 4 x 21 Inch 200393 200393 - ESP Water
Free Shipping
AXEON
AXEON HF5-4021 RO Membrane 200393, 1,000 GPD at 80 PSI Test Pressure, Nominal 4 x 21 in
(3)
$282.00
Thin Film Membrane (TFM)
AXEON NF3 - 4021 RO Membrane 1000 GPD, 4"x21", 70 PSI, 200405 200405 - ESP Water
Free Shipping
AXEON
AXEON NF3-4021 RO Membrane 1000 GPD, 4"x21", 70 PSI, 200405
(0)
$299.00
Thin Film Membrane (TFM)
AXEON NF4 - 4021 RO Membrane 950 GPD, 950 PSI, 4 x 21 Inches, 200411 200411 - ESP Water
Free Shipping
AXEON
AXEON NF4-4021 RO Membrane 950 GPD, 70 PSI, 4 x 21 Inches, 200411
(0)
$299.00
Thin Film Membrane (TFM)
AXEON HF3 - 4021 RO Membrane 900 GPD 4 x 21 Inches, 200372 200372 - ESP Water
Free Shipping
AXEON
AXEON HR3-4021 RO Membrane 200372, 900 GPD at 225 PSI Test Pressure, Nominal 4 x 21 in
(0)
$289.00
Thin Film Membrane (TFM)

Replacement filter info

Your replacement schedule

Each stage of the RO Systems International COM-II-800S, the exact part that fits it, and when to change it.

  1. Stage 1: Sediment filter

    Part 93047, Suez Purtrex 93047 Sediment Filter 5 Micron 2.5 x 20 in $13.99

    Every 6–12 months

  2. Stage 2: Carbon block filter

    Part OMB200-5m, Omnipure OMB200-5m Carbon Block Filter 5 Micron 2.5" x 20" $31.99

    Every 6–12 months

  3. Stage 3: RO membrane

    Part 200378, AXEON HF1-4021 RO Membrane 200378, 1,000 GPD at 150 PSI Test Pressure, Nominal 4 x 21 in $271.00

    Every 2 years

  4. Alternative for stage 3: RO membrane

    Part 200390, AXEON HF4-4021 RO Membrane 200390, 1,000 GPD at 100 PSI Test Pressure, Nominal 4 x 21 in $277.00

    Every 2 years

  5. Alternative for stage 3: RO membrane

    Part 200393, AXEON HF5-4021 RO Membrane 200393, 1,000 GPD at 80 PSI Test Pressure, Nominal 4 x 21 in $282.00

    Every 2 years

  6. Alternative for stage 3: RO membrane

    Part 200405, AXEON NF3-4021 RO Membrane 1000 GPD, 4"x21", 70 PSI, 200405 $299.00

    Every 2 years

  7. Alternative for stage 3: RO membrane

    Part 200411, AXEON NF4-4021 RO Membrane 950 GPD, 70 PSI, 4 x 21 Inches, 200411 $299.00

    Every 2 years

  8. Alternative for stage 3: RO membrane

    Part 200372, AXEON HR3-4021 RO Membrane 200372, 900 GPD at 225 PSI Test Pressure, Nominal 4 x 21 in $289.00

    Every 2 years

Manuals & instructions

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