VIQUA Sterilight D4

Product Description
Water quality can vary over time and get polluted over dangerous bacteria. The VIQUA ultraviolet sterilight systems are designed to improve the overall quality of your water by removing these contaminants. The D4 is easy to maintain and built to deliver outstanding UV performance for the average size home or light commercial application, for flow rates up to 12 gpm (45 lpm). 


  •  Chemical-free
  •  Easy to install and service
  •  Economical and energy efficient
  •  Addresses broader range of pathogens than chlorine*
  •  Recognized by regulators including USEPA
Dimensions 20 1/2″ x 4″ (52 cm x 10 cm)
Shipping Weight lbs (kg) 10 lbs (4.5 kg)
Connection Size 3/4″ MNPT
Power Consumption 50W



  • Safety-loc connector
  • high output
  • EOL timer
  • space efficiency
  • LED monitor
  • 2x output
  • constant current
  • point of entry (POE)
Disinfection Flow Rates
16mJ/cm2 23 GPM (87 lpm) (5.2 m3/hr)
30mJ/cm2 12 GPM (45 lpm) (2.7 m3/hr)
40mJ/cm2 9 GPM (34 lpm) (2 m3/hr)



Ideal Applications Include:
  • UV water treatment has been increasingly increasing in usage, as people are looking for a chemical-free alternative to ensure that their water is clean and unburden from microbial pollutants.


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(1 review) Write a Review
  • 5
    Love these quality Viqua products

    Posted by Nathan Alston on Jul 8th 2018

    Thank you for the wondeful product

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