Description
RK2/XFLO Quartz Sleeve U200000-25MM521D | 25 mm Diameter • Approx. 521 mm Length (~20.5″) • OEM Replacement Sleeve for XFLO/RK2 UV Systems
The U200000-25MM521D quartz sleeve is a genuine replacement component designed for selected XFLO / RK2 Systems UV steriliser units which use a 25 mm diameter quartz sleeve with approximately 521 mm length. It ensures the UV lamp remains properly shielded inside the reactor, enabling optimal UV-C light transmission and maintaining the steriliser’s performance.
Key Features
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25 mm outer diameter – Matches the OEM specification for many XFLO systems.
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Approx. 521 mm (20.5 inch) length – Suits reactor vessels requiring this specific sleeve length.
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Hard-quartz material – Excellent UV transmission, strong resistance to thermal and chemical stress.
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OEM part compatibility – Ensures proper fit and alignment for the designated systems.
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Maintains steriliser performance – Replacing worn or fouled sleeves helps ensure the UV unit continues to deliver the correct dose.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | U200000-25MM521D |
| Outer Diameter | 25 mm (~1″) |
| Length | ~521 mm (~20.5″) |
| Material | Hard-quartz glass |
| Typical Use | Replacement sleeve for XFLO/RK2 UV systems requiring this sleeve size |
Applications
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Replacement quartz sleeve for smaller or medium-sized XFLO/RK2 UV steriliser reactors that originally used a ~521 mm sleeve length.
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Ideal for aquarium, pond or water-treatment systems where the correct sleeve size is essential to maintain UV dose and performance.
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Useful for service technicians or maintenance inventory of XFLO/RK2 systems to ensure reliable and compatible parts.
Benefits
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Restores correct UV-C exposure by replacing old or clouded quartz sleeves, which can reduce sterilisation efficiency.
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OEM-correct size and diameter reduce risk of compatibility issues that might come from generic replacements.
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Longer product life and system clarity by maintaining the proper sleeve size and transparency.
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Helps prolong the life of the UV lamp and maintains system performance by ensuring proper enclosure and protection.
Installation & Maintenance Tips
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Turn off and depressurise the UV vessel before removing the old quartz sleeve.
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Remove the old sleeve with care, inspect the O-ring seals and replace them if worn or damaged.
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Handle the new sleeve with caution—avoid touching the quartz surface with bare hands or allowing fingerprints, as this can reduce UV-C transmission.
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Install the sleeve firmly and ensure correct seating in the reactor vessel; check that the lamp assembly aligns properly.
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After installation, check for leaks, ensure correct flow, then monitor the UV system’s performance. Periodically inspect the sleeve for clouding, scaling or deposits and clean or replace as required.
Summary
The U200000-25MM521D quartz sleeve is a critical replacement part for XFLO/RK2 UV steriliser systems requiring a 25 mm diameter sleeve with approximately 521 mm length. Using the correct OEM sleeve helps maintain system performance, clarity and reliability—especially in aquatic systems where UV sterilisation is key.