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Microline Premium 3-Stage Reverse Osmosis System

Microline STF35SNGNM | Our#: 175643


Avg. T.D.S. Reduction0.94
CertificationsNSF Approved
CertificationsNSF / ANSI Standard 58
FaucetLong Reach Chrome R.O. Faucet
Incoming Water Pressure40 - 100 psig
MembraneThin Film Composite - TFC Membrane
Membrane Production41 - 53 GPD
Post FilterMicroline Activated Carbon Post Filters # S 7025
Pre FilterMicroline Split Carbon / Sediment Pre Filter # S 7028
Tank Dimensions17" H X 9" Dia.
Warranty1 Year Limited Warranty

If you buy bottled water, an R.O. System will save you money ! ! !


Americans used 50 BILLION plastic water bottles in 2006.  Of those, 38 Billion went to into landfills.  You can help the green movement, and more importantly, help yourself, by installing an R.O. System.  Over a 10 year period, an R.O. System will cost you less than a penny a gallon.  How much money do you spend on bottled water ? 


The Microline Reverse Osmosis Drinking Water system is great product.  This unit has been sold for many years, and replacement filters are inexpensive and easy to find. The Microline R.O. has a patented manifold that simplifies installation.  The Microline R.O. system is a great choice for the DIY'er, with color coded tubing and all the necessary installation materials, allowing for easy installation.  With a simple design and high quality materials, the Microline R.O. makes purified water simple to own and maintain.  The Microline R.O. System produces high purity water.  This unit typically removes 95% of the contaminents from your household water supply, giving you high quaility water right at your kitchen sink. These systems will also produce at least 10+ gallons of water a day !  Maintenance is also easy, with a simple Pre and Post filter replacement every 6 to 12 months, and the R.O. membrane having a life expectancy of 3 to 6 years.  The Microline R.O. System gives you bottled water quality water at a fraction of the price !


Reverse Osmosis is the natural process which sets the foundation for the Microline R.O. Drinking Water System.  This R.O. System takes the water pressure from your household tap to force that water thru the semi-permeable TFC Membrane.  This membrane seperates the water at the molecular level.  The water is pre treated thru the Split Carbon / Sediment filter, then processes and purifies the water thru the membrane, and then stores the pure water in the holding tank.  When water is needed at the R.O. Faucet or at the fridge, the water from the holding tank first goes thru the Post Activated Carbon filter before exiting to the point of use.

This is a 3 stage R.O. Drinking Water System. The 3 stages are comprised of:

( 1 ) Split Sediment / Carbon Block Pre Filter (# S7028)
( 2 ) TFC Membrane
( 3 ) Granular Activated Carbon Post Filter (# S7025)

NOTE: Filters available as a set


Click here to see RO System faucet options


This system is easy to install ! 

Microline R.O. System includes:

  • Integrated System Mounting Bracket
  • Automatic Shut Off ( ASO ) 
  • 50 GPD TFC Membrane
  • Microline S7028 Split Sediment / Carbon Block Pre Filter
  • Microline S7025 Granular Activated Carbon
  • 4 Gallon Holding Tank - NSF Approved
  • Drain Saddle
  • Supply Water Tapping Valve
  • R.O. Faucet w/ Chrome Finish w/ Air Gap, Quick-Connect Fitting
  • Color-Coded Tubing (1/4" RED - Feed Water, 3/8" YELLOW - Holding Tank, 1/4" BLACK - Discharge / Drain, 3/8" BLUE - R.O. Faucet)
  • Spanner Wrench for filter sump removal
  • Black Drain Tubing with integral check valve / D.L.F.C.
  • Installation instructions