RQ-22 - Atlas L22 Replacement Quartz Sleeve and Luminor RQ-470

This RQ-22 quartz sleeve is the direct replacement for Atlas L22 UV systems and is cross-referenced to the Luminor RQ-470, so it also suits systems specified under that code. WrekinWater supplies it with a new O-ring included, so you're not left ordering a separate seal to complete the job. It has a domed end, matching the original Atlas L22 sleeve.

Signs your quartz sleeve needs replacing

• The sleeve looks cloudy, hazy, or scratched rather than clear.
• Brown or yellow staining has built up on the glass.
• Your UV monitor or alarm is triggering even though the lamp is lit.
• The sleeve is around 12 months old or older, the usual UV service interval.

On an Atlas L22 (or equivalent Luminor RQ-470) system, this sleeve is what keeps the lamp dry while letting UV light reach the water passing through the chamber. Scale and fouling on the quartz reduce how much light gets through over time, so the system can quietly under-disinfect even while the lamp still lights up as normal. The included O-ring matters just as much: a worn or perished one is a common cause of a leak straight after a sleeve change.

WrekinWater stocks Atlas UV parts as part of a wider range covering major water treatment brands, and this RQ-22 listing includes the correct O-ring so you're not hunting for a separate seal afterwards. Rated Excellent on Trustpilot, we're a family business that's been doing this for 15 years and happy to confirm fit if your system is labelled as Luminor rather than Atlas.

How to replace it

1. Isolate the water supply to the UV unit and drain the housing.
2. Undo the retaining nut or union, then withdraw the lamp followed by the old sleeve.
3. Clean any scale from inside the housing before fitting the replacement.
4. Fit the new O-ring supplied and insert the new sleeve, domed end first.
5. Refit the lamp, restore power and water supply, and run to drain briefly before use.