Viqua Sterilight 2.5-3.5 GPM UV VT4

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BACKORDER - 4-6 weeks



Treats 3.5 GPM @ 30mJ/cm2

Rated to treat up to 3.5 gallons per minute at industry standard 30mJ/cm2

Treats 2.5 GPM @ 40mJ/cm2

Using the NSF dosage of 40mJ/cm2, this system can treat up to 2.5 gallons per minute

Stainless Steel Reactor Chamber

Compact housing made of 304 stainless steel with a 1/2-inch connection, backed by a 10-year warranty

BA-VT Controller

Simple controller with "on" indicator light


High quality lamp with a 1 year warranty

QS-330 Quartz Sleeve

Open ended sleeve with 1 year warranty provides easy bulb changes without turning the water off

Easy Lamp Change

No tools required, and the water doesn't even need to be shut off

Manufacturer Warranty

Reaction Chamber - 10 years
Hardware and electrical - 3 years
Lamps and Sleeves - 1 year

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1 Review

  • 4
    Good design, works great but heats up water too much

    Posted by Patrick F Keogh on Jul 20 2020

    I like this product very much but as I've been using it I wish there was a flow switch that kept the UV light off when there is no flow through the system. Without it the chamber heats the water to an undrinkable temperature and I have to often run off gallons of water before the temperature drops to a reasonable level. In the meantime I have to waste lots of water and electricity, both of which are very expensive where I live. Could you please offer a flow switch and change to a UV bulb that can be switched on and off without effecting its life span?

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