Description
The Pura UV #20 Quartz Sleeve (36003035) is a high-quality replacement quartz tube designed to protect the ultraviolet (UV) lamp inside compatible Pura & AquaFlo UV water disinfection systems. Quartz sleeves are essential components that allow maximum transmission of UV-C light through the water column while keeping the lamp isolated from direct water contact — a critical function for effective microbial disinfection.
Key Features & Benefits
- Genuine replacement part engineered for Pura UV systems — ensures proper fit and performance.
- High-purity fused quartz construction allows excellent UV-C light transmission for reliable disinfection.
- Protects the UV lamp from water exposure, thermal stress, and potential electrical shorting.
- Helps maintain stable UV dosage, maximizing the system’s ability to inactivate bacteria and other microorganisms.
- Easy service replacement — change the sleeve during routine annual maintenance or when cleaning is no longer effective.
Compatibility
The Pura UV #20 Quartz Sleeve (36003035) is specifically designed to fit the following UV systems (verify your model and lamp before purchasing):
- Pura UV-20 series (single and multi-stage models)
- Pura Add-On 3 UV systems
This part pairs with the corresponding UV lamp #20 (Part 36002018) used in these systems.
Maintenance & Replacement
- Inspect and clean annually: Quartz sleeves can accumulate mineral scale or staining over time, reducing the amount of UV-C light that gets through. If cleaning with a soft cloth and non-abrasive cleaner doesn’t restore clarity, it’s time to replace the sleeve.
- Replace when damaged: Cracks, chips, discoloration, or cloudiness after cleaning all indicate it’s time for a new sleeve.
- Handle with care: Quartz is fragile — avoid touching the glass surface with bare hands, as oils can shorten performance once installed.
Why This Matters
The quartz sleeve plays a critical role in UV water disinfection by enabling the UV lamp to operate in a protected, water-free zone while still allowing UV-C light to sterilize flowing water. Over time, buildup or damage can reduce effectiveness, so timely replacement helps ensure your UV system continues to deliver safe, chemically-free water treatment.

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