Viqua VT1-DWS Ultraviolet (UV) Sterilizer
The Viqua VT1-DWS Drinking Water System with UV is a complete "entry level" system designed for optimal cost effectiveness for basic point-of-use applications with flow rates up to a maximum of 1 gallons per minute (GPM) or 4 liters per minute (LPM). It combines our popular Viqua VT1 UV with integral prefiltration, including two 10" filter housings with 5 micron sediment and taste/odour cartridges. For ease of installation, the VT1-DWS is mounted on a heavy-duty, painted steel bracket. It is a popular choice as a complete water purification system at a single faucet, water fountain, or similar low flow rate application.
Although the Viqua VT1-DWS (part of Viqua's Tap Series) is designed to be economical, all Viqua Tap Series units feature a visual "lamp on" indicator light, a stainless steel reactor chamber, a fire-polished domed quartz sleeve, and Sterilights' popular Sterilume™-EX coated low pressure germicidal UV lamp which can be easily changed without interrupting the water flow.
Water exceeding 120 ppm in hardness (7 grains per gallon) should be softened to reduce the risk that hard water mineral scale will build-up on the UV sleeve thereby reducing UV light distribution into the UV chamber. Similarly, iron levels exceeding 0.3 ppm or manganese levels exceeding 0.05 ppm should also be treated to prevent staining of the UV sleeve.
Elevated levels of certain other contaminants, such as tannins, can cause a reduction in UV transmittance (the ability of the water to transmit UV light). If the UV transmittance (UVT) of your water is less than 75% after the above-mentioned pre-treatment, activated carbon filtration may be desirable to improve UV transmittance. The majority of deep wells have a UVT of 85% or greater. If your UVT is unknown, select a model with a higher flow rate capacity then you feel you will really require (this will provide a higher UV dose at your desired flow rate), or add an activated carbon pre-filter to your system.
|Viqua VT1-DWS Specifications|
|Max. Flow Rate
(UV dose >30 mJ/cm2)*
|1.0 GPM (4.0 lpm)|
|Max. Flow Rate
(UV dose >40 mJ/cm2)*
|0.7 GPM (3.0 lpm)|
|Water Chamber Material||304 Stainless Steel|
|Dimensions||15" x 17" x 6"
(38cm x 43cm x 15cm)
|Power Consumption||13 watts|
|Inlet / Outlet Plumbing Ports||1/4" tube / 1/4" tap|
|Integrated Ballast / Lamp Connector|
|"Power-On" Indicator Light|
|Warranty||Reaction Chamber: 10 years
Lamp: 1 year
All Other components:3 years
|Manual||VT1-DWS, VT4-DWS, VT4-DWS11|
|Feed Water Quality Parameters|
|Iron||0.3 ppm (0.3 mg/L)|
|Manganese||0.05 ppm (0.05 mg/L)|
|Tannins||0.1 ppm (0.1 mg/L)|
|Turbidity||< 1 NTU|
|Hardness||< 120 ppm (7 grains / gallon)|
|UV Transmittance (UVT):||75%|
|Maximum Temperature:||104F (40C)|
|Maximum Pressure:||125 psi|
Options, Accessories and Replacement Parts
*Note: Maximum recommended flow rates based on 95% UV transmittance. Actual dosage depends on flow rate, water quality, and maintenance (cleaning ov UV sleeve). UV dosage will be lower when the UV transmittance capacity of the water drops below 95% - if in doubt, select a model rated for a higher flow rate than you actually require. We recommend a UV dose of 40 mJ/cm2.