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AquaPro RO LC-4 Series
(3,600 to 10,800 GALLONS PER DAY)
The AquaPro RO® LC-4 Series reverse osmosis system is a high quality, rugged water purification system designed by PureH2O, Ltd.® to operate from tap and brackish source water in The Bahamas and Caribbean Islands. The system comes with a range of high performance standard features including our digital controller for continuous monitoring and operation, stainless steel membrane housings, inlet and outlet pre-filter pressure gauges, low-pressure switch with delayed auto restart, inputs for tank level and pretreatment interlock, conductivity meter, high-conductivity alarm output, adjustable reject recycle, permeate and reject water flow meters, reject recycle flow meter, permeate water check valve, inlet solenoid valve, membrane feed and reject water pressure gauges, auto flush, and adjustable reject valve.

Note: Do not operate this RO system with feed water that is microbiologically unsafe or of unknown quality without adequate disinfection.

Feed Water Guidelines

pH Range
6 to 9

Hardness (maximum)
Less than 1 grain per gallon as CaCO3

Feed Water Pressure (minimum)

35 - 100°F (2 - 38°C)

Free Chlorine (maximum)
None Allowed

Iron (maximum)
Less than .1mg/L

Oil and H2S
None Allowed

Less than 1.0 NTU

Silt Density Index
Less than 5.0 SDI

For complete technical specifications and operating information please contact PureH2O, Ltd.®

Individual membrane productivity may vary (± 15%). System may be operated on other feed water with reduced capacity.

Percent rejection is based on membrane manufacturer's specifications; overall system percent rejection may be less.

All PureH2O, Ltd.® Residential and Commercial Reverse Osmosis Systems are warranted to the original purchaser to be free of defects in material and workmanship for a period of one year from date of installation. PureH2O, Ltd.® will repair or replace parts which are defective. Normal wear, accident, abuse, misuse, unauthorized alteration or repairs are excluded. PureH2O, Ltd.® will not be responsible for damages resulting from the improper installation or operation of a PureH2O, Ltd.® system by a third party. This limited warranty is effective only for installations completed by a PureH2O, Ltd.® For warranty issues please call 242-327-3541.

AquaPro RO® LC – 4 Series


  • Membrane Auto Flush.
  • Powder coated carbon steel support frame.
  • 316L stainless steel 300psi high-pressure membrane housings.
  • Pressure gauges for pre-filter inlet/outlet, membrane feed, and reject water pressure.
  • Low feed water pressure safety switch.
  • Digital microprocessor based controller with delayed auto restart after low-pressure shut down.
  • Permeate water conductivity meter with high-conductivity alarm output.
  • Tank level and pretreatment interlock inputs.
  • High-pressure/high-rejection membranes with 99% minimum average ion rejection.
  • Permeate, reject recycle, and reject water flow meters.
  • Adjustable reject and reject recycle valves.
  • Permeate check valve.
  • Automatic inlet solenoid valve.
  • 20" high flow pre-filter.
  • Pre-filter Housing NSF/ANSI Certified 42.

The AquaPro RO LC-4 Series reverse osmosis system should be installed after a PureH2O, Ltd.® water softener so that scale forming calcium and magnesium hardness cannot damage the RO membranes. PureH2O, Ltd.® backwashing carbon filter should be installed on the RO feed water line to remove chlorine and prevent membrane degradation due to chlorine attack. A PureH2O, Ltd.® backwashing sediment filter should also be installed on the RO feed water line to reduce the silt density index of the water to prevent particulate fouling of the RO membranes.

This RO system is a high-pressure/high- rejection type unit complete with permeate and reject water flow meters, reject recycle water flow meter, pre-filter inlet and outlet pressure gauges, membrane feed and reject water pressure gauges, automatic inlet solenoid valve, reject and recycle valves, digital controller with conductivity meter and high-conductivity alarm output, storage tank level and pretreatment interlock inputs, 5 horse power multistage centrifugal high-pressure pump, and all other components necessary for continuous high-performance operation. The standard system is skid-frame mounted and may be modified for wall mount installation. The RO permeate water is collected in an atmospheric storage tank with the tank level controlled by an electronic level float.

The system is equipped with inputs for the tank level float as well as pretreatment interlock to shut the RO system down in the event the pretreatment begins a backwash cycle. Electrical requirements are 230 volt 60 hertz three phase. A local drain is required to accept discharge water from the system. The feed water pressure must not fall below 20psi. The feed water temperature must not fall below 35°F or exceed 100°F (2° - 38°C).

The system will produce ultra-pure reverse osmosis water with 99 percent average ionic rejection of total dissolved solids (TDS) when operated within the manufacturer's operational specifications.

Dimensions - Weights


Ordering Information