Premier RO 4-Stage Undersink Reverse Osmosis System with Kwik Change

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SKU: F531411

Availability: In stock

List Price: $455

Sale Price: $325

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Premier RO 4-Stage Undersink Reverse Osmosis System

Watts Premier RO-4 531411 RO PURE 4 Stage Reverse Osmosis System Kwik Change


Welcome to EASY!

If quality and convenience are what you're in the market for, then this is the water filtration system for you! This design is the newest member of our reverse osmosis family and it is a snap, literally. These filters change out at the push of a button. You don't even need to turn off the water supply to the system and there's no waiting for the system to depressurize. Each individually contained filter just snaps into place. Including the membrane! It doesn't get easier than this.

This four-stage reverse osmosis system consists of:

Stage 1 – A five-micron sediment filter that traps particulate matter like dirt, rust, and silt that will affect the taste and appearance of your water.

Stage 2 – A five-micron carbon block filter that helps ensure a greater reduction of chlorine and other materials that cause bad taste and odors. (These are called PRE-filters because they filter in front of the reverse osmosis membrane.)

Stage 3 – The heart of the reverse osmosis system, the RO Membrane. This 50 gallon per day semi- permeable membrane will effectively reduce TDS (total dissolved solids), sodium and a wide range of contaminants such as lead, arsenic, percolate, chromium, copper and radium. It will also remove over 99.95% cysts such as giardia and cryptosporidium. The larger production membrane of this state of the art system also means this system has been designed to reduce nitrates and nitrites from your drinking water. It is important that this system is properly installed and maintained with a minimum incoming water pressure of 40 psi for it to operate as designed.

Stage 4 – A high quality carbon filter (this is called a POST-filter because it filters after the membrane). The filtered water passes through the membrane and enters the storage tank. When you're ready for a taste, it will leave the storage tank and pass through this fourth stage on its way up to the faucet. The end result? Crystal clear, high quality, and great tasting water!


High end "Designer" chrome air gap faucet


System tested and certified by WQA against NSF/ANSI Standard 58 for the reduction of the claims specified on the performance data sheet.

In the Box

RO Pure Reverse Osmosis module (complete with filters)

  • One Reverse Osmosis Filtration System (Watts RO-PURE 531411)
  • One 10" Sediment Filter (105311)
  • One 10" Carbon Block Filter (105351)
  • One 10" RO Membrane Filter (105331)
  • One 10" Granulated GAC Carbon Filter (105341)
  • One Designer Chrome Airgap Faucet
  • Tubing (white)
  • One 4.4 gal water storage tank (white)
  • Installation kit and hardware

Product Dimensions

Width: 12.00 inches
Height: 12.00 inches
Depth: 4.00 inches
Weight: 20 lbs.

Operating Parameters

Operating Temperatures: Maximum 100°F (37.8°C);
Minimum 40°F (4.4°C)
Operating Pressure: Maximum 100 psi (7.43 g/cm2)
Minimum 40 psi (2.80 kg/cm2)
pH Parameters: Maximum: 11; Minimum: 2
Iron: Maximum 0.2 ppm
TDS (Total Dissolved Solids): < 1800 ppm
Turbidity: < 5NTU

Hardness:  Recommended hardness should not exceed 10 grains per gallon or 170 ppm.  System will operate with hardness over 10 grains but the membrane life may be shortened.  Addition of a water softener may be required to extend life of membrane if needed.

Note:  The operating pressure in your home should be tested over a 24 hour period to attain the maximum pressure.  If it is above 100 psi then a pressure regulator will be required.

Additional Information

Installation, Operation and Maintenance Manual

Please Note:  The Watts RO-Pure Kwik-Change filters are not compatible or interchangeable with the Watts Premier Water Quality Kwik-Change Reverse Osmosis System (the system described on this page). The Watts Water Quality Kwik-Change WQC4RO11-50MTNF is a ¼-turn release; the filters for the model on this page by Watts Premier (RO-4 531411) change out at the push of a button.

Additional Information

Manufacturer ---
UPS Ground Free Shipping No
SKU F531411
Weight 20.0000

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