Description
The Watts UV Lamp 8 2090119 (WUVLAMP8) is a high-output ultraviolet germicidal replacement lamp specifically engineered for use in Watts SmartStream® UV water disinfection systems, especially the 8 GPM WUV8-110 and related residential/light-commercial models. Designed for effective microbial inactivation, this lamp emits powerful UV-C light that helps neutralize bacteria, viruses, and protozoa in potable water without chemicals.
Key Features & Benefits
- OEM-style UV replacement lamp — Part # 2090119 designed for Watts SmartStream UV systems.
- 8-Watt UV-C output tailored for ~8 GPM disinfection chambers.
- Rated for approximately 9,000 hours (~12 months) of continuous use — replace annually for consistent performance.
- Emits UV-C light in the germicidal spectrum to help inactivate waterborne pathogens without chemical additives.
- Easy tube-style replacement — installs quickly during annual service or lamp change-out.
Compatible Systems
This lamp is designed for use in Watts SmartStream® UV disinfection systems, including:
- Watts WUV8-110 UV Disinfection System (8 GPM) with ¾″ MNPT connections.
⚠️ Always verify your system model and lamp part number before ordering to ensure proper fit and performance.
Matching Quartz Sleeve : 2090125
Why Replace the UV Lamp
UV lamps gradually lose germicidal output over time even if the lamp still glows — reducing disinfection efficiency. Replacing the lamp annually helps maintain a proper UV dose for safe microbial control and preserves the performance of your UV system. It’s also a good opportunity to inspect and clean the quartz sleeve that protects the lamp.
Maintenance Tips
- Replace annually or per manufacturer guidance.
- When replacing, clean or inspect the quartz sleeve to ensure high UV transmission.
- Always handle UV lamps carefully — do not touch the glass with bare hands, as oils can shorten life.

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