Aqua Classic I RO System

Aqua Classic ACI-TLC RO System

Aqua Classic ACII-TLC RO System

Featuring traditional design with blue filter housings and a blue steel tank, the Aqua Classic RO System by Nelsen Corp includes Reverse Osmosis/Activated Carbon purification assembly, 3.2 gallon steel tank, a long reach non air-gap faucet, automatic shut-off, and an installation parts kit. The Aqua Classic I RO systems feature a 5 micron sediment filter, a 5 micron carbon block, a RO Membrane of varying capacities, and in systems with an additional stage, a 5 micron inline GAC (Granular Activated Carbon) filter. There is additional stage available with optional ECF (Extended Contact Carbon Adsorption Filter) providing additional water treatment. Please note: Chlorinated Water and Carbon pre-filtration is required when used with chlorinated water.



  • STAGE 1 – Sediment Pre-Filter (93023) – Replace Every 12 Months
  • STAGE 2 – Carbon Block Pre-Filter (OMB934-5M) – Replace Every 12 Months
  • STAGE 3 – RO Membrane (See below for options) – Replace Every 24 Months
  • STAGE 4 – Optional: for use in ACI-TLC D models - ECF (Extended Contact Carbon Adsorption Filter) (CL10ROT33-BB) – Replace Every 12 Months

PDF iconAqua Classic I RO System Manual