TGI-315 Three Stage RO System


The TGI (Topway Global) TGI-315 3 stage RO system uses a sediment pre-filter to reduce sediment particles before the membrane filters out impurities larger than .001 microns. The GAC post filter treats for taste and odor. You can find and order all your filters at once in our replacement kits below.


Due to a discontinued membrane, we recommend switching to a RO Retrofit Kit, which allows for continued use of the tank and faucet in addition to upgrades in filtration technology. If your system features 3/8" tubing to the faucet, replace with the Goldline-50-RK RO Retrofit Kit. A John Guest Stem Reducer may be required. For systems with 1/4" tubing to the faucet, replace with the PureValue 5EZ50-RK RO Retrofit Kit. Please check your system as a different retrofit kit may be required.



  • STAGE 1 – Sediment Pre-Filter (93023) – Replace Every 12 Months
  • STAGE 2 – DISCONTINUED - RO Membrane CTA 16 GPD (1201332) – Replace Every 24 Months - Recommend converting system with the Goldline-50-RK RO Retrofit Kit for continued.
  • STAGE 3 – Carbon GAC Post Filter (OCB934ROT33) – Replace Every 12 Months

PDF iconTGI RO System Manual