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Viqua Model G, 19 GPM Ultraviolet System with Intuitive Controller

  •   Model # 650645
  •   Brand UV Max
Filtered Water Benefits the Whole Family
Standard Dosage
US Public Health Standard - EPA16mJ (high capacity stated)
Industry/Manufacturers Standard30mJ (primary capacity stated - top of page)
NSF Standard40mJ (lowest capacity stated)
Contaminant Dosage required to sterilize
(mJ/cm2) 99% Effectiveness
Cryptosporidium parvum oocysts8
Giardia lamblia cysts (Beaver fever)< 10
Vibrio cholerae (Cholera)3
Shigella dysenteriae (Dysentery)3
E.coli (Escherichia coli O157:H7)6
Salmonella typhi (Typhoid fever)9
Shigella sonnei9
Legionella pneumophila (Legionaires' disease)10
Salmonella enteritidis (causes gastroenteritis)10
Hepatitis A virus16 - 30
Poliovirus Type 121 - 30
Coxsackie B5 virus30
Rotavirus SA1131 - 36

It is strongly recommended (by all UV manufacturers) for maximum efficiency of your UV Sterilization, that you pre-filter your water with a 5 Micron sediment cartridge.

Do not connect plastic pipe or tubing directly to the UV system because the UV light will break down plastic over time. The best way to make the connection is with Dielectric Unions that allow for a connection from stainless steel to copper, that will not corrode.

Pre-Filter Required
Use the promo code below to receive an 10% off of the price shown for all UV systems:
Promo Code: "uvsale"
10 Years on UV Reactor • 3 Years on Ballast • 1 Year on Lamps
UV light has germicidal properties

Ultraviolet light is split into several different ranges: (near the visible light range) UV-A, UV-B, UV-C, Vacuum-UV (near the x-ray range). The UV-B range is what causes sunburn on humans. UV water purifiers use the UV-C range because of its germicidal abilities. In this range the light light will break molecular bonds in the DNA of viruses and bacteria, rendering them unable to reproduce and effectively killing them.

The most suitable replacement for this is the
UV Max F4 (650686)

Need a replacement UV lamp? This system uses the
UV Max 602854 Replacement Lamp

UV Max Model G features 316 stainless steel reactor, intuitive interface controller with plug-and-play color coded connections, CoolTouch fan included, and features a high-output amalgam lamp with 2-year life.

UV Max's Model G features included a controller with water resistant case, indicator lights on the power source showing the status of each system component. A stainless steel chamber with safety cap (can not be removed while light is on) and special lamp plug are standard.

In addition, Model G also features a lamp timer reset button and mute button to silence audio alarm, along with lamp life display counter.

UV Max's Model G is high flow rate model. With disinfection available at 19 GPM, Model G is ideal for larger households or commercial use.

Models G/Plus, H/Plus, J/Plus & K/Plus UV Max Systems include all components and accessories needed for initial installation and use. These include UV Lamp, Electronic Ballast, Quartz Sleeve & 316 Stainless Steel UV Reactor (Water Chamber).

UV Max Systems treat the water for the whole home, eliminating 99.99% of bacteria and viruses including chlorine-resistant cysts that are not tested for in routine water tests (such as Cryptosporidium and Giardia)

UV Max Systems Warranty:

  • 5-Year Warranty against manufacturer's defects on the power supply and all electrical components
  • 10-Year Guarantee on the Stainless Steel UV Reactor
  • 2-Year* Warranty on lamps. (*Models G/Plus, H/Plus, J/Plus, K/Plus & PRO Series)

How does Ultraviolet Sterilization Work?

The germicidal energy of ultraviolet light destroys harmful microorganisms by attacking their genetic core (DNA). This powerful dose of UV light eliminates their ability to reproduce, and the organisms simply die.

Water is purified by running it through a watertight chamber that contains an ultraviolet lamp. As water flows past, microorganisms are exposed to a lethal dose of germicidal UV energy.

Purification with the UV Max is a safe, natural process that adds no chemicals and does not affect the taste or odor of your water.

Specialized, high output UV lamps maximize the output of germicidal UV energy.

Standard Features

  • Audible/ Visual Lamp Failure Alarm
  • No-tools Maintenance
  • Safety Cap
  • Electronic Power Supply
  • Mounting Bracket
  • 1" FNPT / 1 1/4" NPT Combo Port

Operating Parameters

  • Iron less than 0.3 ppm
  • Hardness less than 7 grains (120 ppm)
  • UV transmittance greater than 75%