Description
RK2/XFLO Quartz Sleeve U200000-25MM-1765D | 25 mm Diameter • Approx. 1765 mm Length (~69.5″) • OEM Replacement for XFLO/RK2 UV Systems
The RK2/XFLO Quartz Sleeve U200000-25MM-1765D quartz sleeve is a high-quality replacement component designed for large-format UV reactor vessels within the XFLO/RK2 product range. With a 25 mm outer diameter and a length of approximately 1765 mm (~69.5″), it fits models that require extended sleeve length to accommodate long-arc UV lamps or higher flow reactors. This sleeve ensures the UV lamp remains properly sealed, protected, and optimally exposed to the water flow for efficient sterilisation.
Key Features
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25 mm outer diameter – Matches the standard quartz-sleeve size used across many XFLO/RK2 systems.
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Approx. 1765 mm length (~69.5″) – Suits large-chamber or high-wattage reactors requiring a longer sleeve than standard models.
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Hard-quartz material – Engineered for excellent UV-C transmission, resistance to thermal shock, chemical attack and scaling.
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OEM-compatible – Designed specifically for XFLO/RK2 systems; ensures correct fit, alignment and performance when replacing original sleeve.
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Maintains system performance – Replacing a worn or fouled sleeve helps restore full UV-C dose, clarity and microbial control.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | U200000-25MM-1765D |
| Outer Diameter | 25 mm (~1″) |
| Length | ~1765 mm (~69.5″) |
| Material | Hard-quartz glass |
| Intended Use | Replacement sleeve for XFLO/RK2 UV reactors requiring long sleeve length |
Applications
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Replacement quartz sleeve for large-diameter or high-output XFLO/RK2 UV steriliser vessels that originally used a ~1765 mm length sleeve.
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Ideal for aquarium systems, ponds, recirculating aquaculture or high-flow installations where extended lamp arc and long exposure path are required.
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Useful part for maintenance technicians servicing XFLO/RK2 UV systems to ensure thermal/operational integrity and sustained UV performance.
Benefits
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Helps maintain effective UV-C dose exposure by restoring clear quartz transmission and correct geometry.
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Protects the UV lamp from direct water contact and maintains designed clear path for disinfection.
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By restoring the correct sleeve dimension, it ensures the steriliser performs to its original specification—crucial for clarity, pathogens control and system reliability.
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Having an OEM-specified part simplifies sourcing, improves fit and reduces maintenance risk compared with generic sleeves.
Installation & Maintenance Tips
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Ensure the UV reactor is powered down and depressurised before removing the old sleeve.
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Inspect and optionally replace any O-rings or gaskets when replacing the sleeve to ensure no leaks and correct sealing.
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Handle the new quartz sleeve with care—avoid touching the glass surface with bare hands, and inspect for chips or scratches before installation.
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After installation, check for leaks, confirm correct lamp alignment and flow path, then monitor system performance as per manufacturer’s service schedule.
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Periodically inspect the sleeve during operation. If you observe clouding, scaling, or deposits on the quartz, schedule a cleaning or replacement to maintain UV effectiveness.
The RK2/XFLO Quartz Sleeve U200000-25MM-1765D quartz sleeve is a specialised, long-length replacement for XFLO/RK2 UV system vessels that demand a 25 mm-diameter sleeve and approximately 1765 mm length. Ensuring you use the correct sleeve helps maintain the designed UV-C dose, system clarity and reliability—especially in large or high-flow aquatic installations.