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Premier 531411 RO-Pure Reverse Osmosis System

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Your Price:
$189.95 (You save $80.00)
17.00 LBS
Calculated at checkout

Product Description

Model# RO-4.  Item Number 531411

Download your Product Manual

The RO-4 reverse osmosis filtration system was designed with you in mind, with a space saving, compact design that allows this system to fit under your sink with minimil spce requirements, and with a 3 gallon storage tank you will have enough water for your daily use. Changing the filters is as easy as pushing a button! With the build in shut of valve when removing the filters there is no mess like traditional models. The filters snap out and are easily inserted. 

  • Reverse osmosis filtration system
  • 3-gallon storage tank
  • Push button filter replacement (auto water shut off)
  • Designer Chrome airgap faucet
  • 4 stages of filtration
  • Adapt-A-Valve Water shut off valve
  • MFG Brand Premier
  • MFG Model# RO-4
  • MFG Part# 531411
  • Certified to industry standard, NSF/ANSI Standard 58
  • Certified by WQA

Reduction Claims Validated for this unit by WQA:

  • Barium
  • Cadmium
  • Copper
  • Cyst
  • Fluoride
  • Hexavalent Chromium
  • Lead
  • Pentavalent Arsenic <= 50 ppb reduction
  • Radium 226/228
  • Selenium
  • TDS
  • Trivalent Chromium
  • Turbidity
  • VOC (as chloroform)

* This product is intended for use only on water supplies that have been shown to be at or below the referenced concentration and valency of arsenic.

Filtration Stages

  • Filter Stage 1 - 5 Micron Sediment Filter 
                           - Reduces Dirt, Sand and Rust
  • Filter Stage 2 - 5 Micron Carbon Block Filter
                           - Reduces Chlorine, Objectionable Tastes and Odor.
  • Filter Stage 3 - 50 GPD (gallons per day) Membrane
                          - High production thin film composite membrane.
  • Filter Stage 4 - Carbon Post filter
                          - Enhance the water’s taste.


Replacement Filters:

Stage 1:  Changed Every 6 months
(1) Sediment Filter - RED (105311

Stage 2:  Changed Every 6 months
(1) Pre-Carbon Filter - YELLOW (105351

Stage 3:  Changed Every 2-5 years
(1) 50 GPD Membrane - GREEN (105331)

Stage 4:  Changed Every 12 months
(1) Post-Carbon Filter - BLUE (105341)

Filter Kits:

6 Month Filter Kit
• (1) Sediment Filter - RED
• (1) Pre-Carbon Filter - YELLOW 

Annual Filter Kit
• (2) Sediment Filters - RED
• (2) Pre-Carbon Filters - YELLOW
• (1) Post-Carbon Filter - BLUE

Please Note: RO Membranes Not Included in any kits

 To view these on the Filter Replacement Guide click here


Assembled Depth (in.)  4.0 in  Assembled Height (in.)  12 in 
Assembled Width (in.)  12.0 in  Automatic shutoff  Yes
Color/Finish  White Filter Housings  Faucet Included  Yes 
Filter change indicator  No Filtration method  Reverse Osmosis 
Fitting size (in.)  Fitting style  Quick connect 
Installation kit included  Yes  Item Package Type  Cardboard Container 
Manufacturer Warranty  3 year limited warranty  Maximum feed water pressure (psi)  100
Maximum feed water temperature (F)  100  Maximum filtered water flow (gallons per day.)  50 
Minimum feed water pressure (psi)  40  Minimum feed water temperature (F)  40 
NSF Listed  Yes  Number of stages  4
Product Depth (in.)  5.5  Product Height (in.)  12.0 in
Product Weight (lb.)  20 Product Width (in.) 
Water Filtration Technology Reverse Osmosis Water Filtration System Type  Under Sink 

 UPC Code


Note: Recommended hardness not to exceed 10 grains per gallon, or 170ppm. System will operate with hardness over 10 grains but the membrane life may be shortened. Addition of a water softener may lengthen the membrane life.

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

premierh2o-mi-contact-reading.pngInstallation Instructions

premierh2o-mi-contact-reading.png Troubleshooting guide

premierh2o-mi-contact-reading.png Replacement Filters



For warranty information on this product, please call our Internet Customer Service Center at 1-800-752-5582


Shipping Options

Most orders ship within 3 business days

Product Videos

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Product Reviews

  1. Number 3 and counting!

    Posted by Casey on 13th Feb 2014

    This is the third Premier 531411 unit that I have purchased over the past 9 years. The first went into an off the grid Costa Rica second home with well water supply. The second is in my present home here in California. And the third unit has just been purchased for our new condo in Puerto Vallarta. Quite simply, these were the very best R.O. units that I could buy. The quality of the water is far superior to any bottled water that we have ever bought. You will not be disappointed.

  2. This is a product worth having in your home.

    Posted by Unknown on 16th Jan 2014

    I bought the 531411 RO with a ph balancing filter for my home. We live in San Diego and the city water is pretty nasty. This filtered water tastes amazing and the ph filter puts back in valuable minerals that the filter removes. We had a professional plumber install the unit because that stuff is beyond me, but it was easy for him and he installed it within 2 hours. I'm very glad I bought this product.

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