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WECO GMQ-50 Compact EZ Twist Reverse Osmosis Water Purification System

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  • Complete Three-stage reverse osmosis water purification system for home installations
  • Ultra-small footprint allows installation just about anywhere - undercounter, bathroom, RV, boat
  • Sediment pre-filter removes sediment, rust particles, sand and other microscopic debris that can contaminate the water supply
  • Granular activated carbon cartridge eliminates chlorine, chloramine, bad tastes and odors, chemicals and carcinogenic disinfection byproducts. Scavenges any trace of taste and odor-causing compounds and gasses for great-tasting, refreshing water
  • Thin Film Composite (TFC) reverse osmosis membrane removes up to 99% of water contaminants like cadmium, lead, nitrate, fluoride and mercury.
  • Comes with a 2 gallon compact water storage tank for a steady supply of purified water.
  • EZ Twist filters make maintenance quick and easy.
  • 70 psi pressure regulator for limiting water pressure and reducing water hammer to protect the RO system. 420 ml/min drain flow restrictor included.
  • Comes complete with a designer purified water dispensing faucet and installation kit.
  • Installation is an easy Do-It-Yourself project with simple hand tools.


The WECO reverse osmosis filtration system also includes a pressurized water storage tank and a brushed nickel designer faucet for dispensing the purified water. WECO reverse osmosis systems use NSF-certified (Standard 61, Section 9) lead-free dispensing faucets. The faucets look attractive, fit into any decor and are certified lead-free to protect you, your family and pets. As the filtration system makes purified water, it fills the storage tank (up to 2 gallons at a time). The storage tank sends purified water to the designer faucet. Your regular sink faucet will provide unfiltered water for washing dishes and cleaning. The designer faucet provides only purified water for drinking, cooking, washing vegetables and pets. You’ll notice an immediate improvement in the taste of coffee, tea, iced drinks, fitness and sports drinks and more!

The WECO filtration system is pre-assembled can be installed with simple hand tools. We recommend installation by a licensed plumber to insure adherence to all local codes. Routine replacement of the filter cartridges is recommended to maintain filter performance. Replacement cartridges are available from WECO.


  • Under-counter in kitchens or bathrooms
  • Office break rooms
  • Health clubs, coffee shops, yoga studios
  • Vacation homes, condominiums, cabins, RVs
  • Lead, fluoride, radon and nitrate concerns
  • Ideal for anyone health-conscious and concerned about drinking water quality

GMQ-50 Reverse Osmosis Water Filtration System


Water Supply Connection uses metPure Universal EZ RO Adapter that fits both 1/2” and 3/8” supply stops.

Use the color coded tubing to make the following connections:

  • The WHITE tubing connects the water supply adapter to the inlet side.
  • The BLUE tubing connects the faucet to the outlet side.
  • The BLACK tubing connects to the drain clamps.
  • The YELLOW tubing connects the storage tank to the inlet side of the postcarbon.

Contaminants Removed

  • Sediment Filter - Up to 99% sediment and particulates (5 microns and higher)
  • Carbon Filter - Up to 99% of chlorine, radon and volatile organic compounds
  • Thin Film Composite Membrane
Sodium 90-95%
Aluminum 93-98%
Magnesium 93-98%
Potassium 90-95%
Iron 2 93-98%
Manganese 2 93-98%
Calcium 93-98%
Copper 94-99%
Silver 93-98%
Zinc 93-98%
Strontium 93-98%
Cadmium 93-98%
Nickel 93-98%
Mercury 93-98%
Radioactivity 93-98%
Chromium-6 94-99%
Chromium-3 94-99%
Lead 94-99%
Chloride 90-95%
Bicarbonate 90-95%
Nitrate3 85-90%
Fluoride 90-97%
Phosphate 93-98%
Chromate 90-95%
Cyanide 90-95%
Sulfate 93-98%
Boron 55-60%
Arsenic + 3 70-80%
Arsenic + 5 94-99%
Selenium 93-98%
Barium 93-98%
Sediment > 99%
Protozoa > 99%
Ameobic- > 99%
Cysts > 99%
Turbidity > 99%
Asbestos > 99%
Bacteria > 99%
Giardia > 99%

* Source: water quality association,

** 60 psi net pressure and 77° F water temperature

*** Performance depends on condition of feed water

  • Granular Activated Carbon Filter - 99% of chlorine, dissolved gasses, volatile organic compounds,

Specifications & Operating Limits

Max. Filtered Water Flow (gpm) 0.75
Max. Hardness 10 Grains @ 6.9 pH
Max. TDS (ppm) 1000
Automatic Shut-Off Yes
Filter Life

6 Months or 900 gallons for pre-filters

24 Months for membrane

Feed Water pH Limits 4-10
Feed Water Pressure (psi) 40 Min - 125 Max.
Feed Water Temperature 40-100 °F
Fittings 1/4" - Push to Connect
Plumbing Connections 1/4" Inlet – 1/4" Outlet
Water Inlet Valve 1/2" & 3/8" NPT ball valve adaptor
Filtered Water Output 50 gal/day
Storage Tank Capacity (gals.) 2.1* (*Theoretical tank capacity. When tested according to NSF/ANSI 58 at 50 PSIG inlet pressure, tank capacity is 1.4 gallons)
Pre Filter Life 950 Gallons
Color Appearance White
Faucet Color Brushed Nickel
Filter Housing White/Clear
Installation Undercounter Kit Included
Unit Color White
System Mounting Orientation Floor Standing or Wall Mount
Weights & Dimensions
Overall Depth 5 in
Overall Height 13.0 in
Overall Width 10.5 in
Tank Dimensions (H X W X D) 12 x 7.5 x 7.5 in (smaller tanks available on request)
Approximate Shipping Weight 25.0 lb
Net Weight 23.0 lb
Icemaker Connection Kit IM25EZ (Available at Additional Cost)
Installation Kit Included
Replacement Filters GMQ-SET3 (Pre Filters & Membrane)
Replacement Membrane ST-RO50
Parts Warranty Limited 1-year
App Filter - Product Type Filtration Reverse Osmosis
More Information
UPC 810388032209
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