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Sterilight SC2.5 Ultraviolet (UV) Sterilizer

Sterilight SC2.5

The Sterilight SC2.5 has been replaced by the
Viqua VT4
which features:

Longer Warranty
Higher Flow Rate

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Sterilight SC2.5

This item has been discontinued by the manufacturer.
It has been replaced by the Viqua VT4, which offers a Longer Warranty and a Higher Flow Rate.

Sterilight Model SC2.5 Replacement Parts & Accessories

Sterilight S212RL
Replacement Lamp

Sterilight S212RL <br>Replacement Lamp

MSRP: US$124.00
Our Price: US$105.00
You save: $19.00

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Sterilight QS-287D
Replacement Sleeve

Sterilight QS-287D <br>Replacement Sleeve

MSRP: US$70.00
Our Price: US$60.00
You save: $10.00

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Viqua BA-VT Ballast
Replaces BA-C1 Ballast

Viqua BA-VT Ballast<br>Replaces BA-C1 Ballast

MSRP: US$222.00
Our Price: US$189.00
You save: $33.00

- More Info -

The Sterilight SC2.5 Ultraviolet (UV) water purifier is an "entry level" UV sterilizer designed for optimal cost effectiveness for basic point-of-use applications with flow rates up to a maximum of 2.5 gallons per minute (GPM) or 9.5 liters per minute (LPM). It is a popular choice as post treatment after a residential under-sink reverse osmosis system or other under sink water filter, or for treating water at a single faucet, water fountain, or similar low flow rate application.

Although the Sterilight SC2.5 (part of Sterilights's Copper Series) is designed to be economical, all Sterilight Copper Series units feature an integrated ballast/lamp connector with visual "lamp on" indicator light, a stainless steel reactor chamber, combination plumbing ports with 3/8"FNPT (female NPT) / 1/2" MNPT (male NPT) for easy installation, 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.

Pre-treatment Requirements:

All UV sterilizers required sediment pre-filtration to reduce or eliminate the possibility that a targeted contaminant could "hide" behind a sediment particle in the "shadow" of the UV light and therefore not receive a full dose of UV light. Accordingly, the manufacturer strongly recommends sediment pre-filtration down to a level of 5 microns or smaller.

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.

Sterilight SC2.5 Specifications
Applications point-of-use
Max. Flow Rate
(UV dose >30 mJ/cm2)*
2.5 GPM (9.5 lpm)
Max. Flow Rate
(UV dose >40 mJ/cm2)*
2.0 GPM (7 lpm)
Water Chamber Material 304 Stainless Steel
Chamber Length 16.5 inches / 41.9 cm
Chamber Diameter 2.5 inches / 6.5 cm
Lamp Sterilume-EX
Model S287RL
Sleeve Quartz
Model QS-287D
Electrical 100-130v, 50/60HZ
Power Consumption 16 watts
Lamp Power 14 watts
Inlet / Outlet Plumbing Ports Combo 3/8" FNPT / 1/2" MNPT
Integrated Ballast / Lamp Connector Has Feature
"Power-On" Indicator Light Has Feature
Warranty Reaction Chamber: 7 years
Lamp: 1 year
All Other components:2 years
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

*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.