QTZ15SE DaRo Saphir 1 Replacement Quartz Sleeve

The QTZ15SE is the genuine-spec replacement quartz sleeve, or "quartz jacket", for the DaRo Saphir 1 UV disinfection system. It has a domed end and is stocked by WrekinWater as a straightforward swap when the original sleeve has scaled, clouded or scratched with age.

Signs your quartz sleeve needs replacing

• Scale, cloudiness or scratching visible on the quartz surface.
• A brown or yellow discolouration showing through the glass.
• Water tasting or smelling slightly off despite the lamp lighting normally.
• The sleeve is over 12 months old, the usual point to renew it.

Inside the Saphir 1, the quartz sleeve keeps the UV lamp isolated from the water while still allowing UV-C light through to disinfect it as it flows past. As limescale or iron builds up on the quartz, or the surface gets scratched during cleaning, that light transmission drops, so the lamp can be lit and the system running while disinfection quietly falls short.

WrekinWater has served more than 50,000 customers over 15 years as a family run business in Bettisfield, Shropshire, and carries an "Excellent" Trustpilot rating, so you can order the correct DaRo Saphir 1 part with confidence rather than guessing at a generic equivalent.

How to replace it

1. Turn off the UV unit and isolate the water supply.
2. Drain the housing and undo the retaining nut or union cap.
3. Withdraw the lamp, then slide the old quartz sleeve out of the housing.
4. Wipe out the housing and fit new O-rings before inserting the new sleeve.
5. Refit the lamp and reassemble the housing, then restore water and power.
6. Run water to drain briefly before using it for drinking.