Hanovia WS216B Quartz Sleeve (QJ25840DE)

This is a replacement quartz sleeve for the Hanovia WS216B UV disinfection system, supplied by WrekinWater under part code QJ25840DE. Hanovia is a well-established name in UV water treatment, and this sleeve is sized specifically for the WS216B chamber, cross-referencing to the G843 lamp and BS214 O-ring used on this unit. It fits in place of the original Hanovia sleeve as a like-for-like consumable replacement.

Signs your quartz sleeve needs replacing

• The sleeve has turned visibly cloudy, hazy or scratched rather than staying clear.
• You can see brown or yellow staining that a wipe does not shift.
• The WS216B's UV monitor is showing a low-output or fault condition.
• The sleeve has been fitted for around 12 months or longer without being renewed.

On the WS216B, the quartz sleeve keeps the G843 lamp completely dry while still allowing its UV output to pass through into the water stream. As the sleeve picks up scale, iron staining or fine scratching from the water passing over it, less UV light reaches the water even though the lamp continues to light and run as normal. Because Hanovia units are often used in demanding applications, a fouled sleeve here can let disinfection performance slip without any obvious external sign.

WrekinWater stocks parts across major UV and water treatment brands, and this WS216B sleeve is listed with its correct cross-references to the G843 lamp and BS214 O-ring so you can check compatibility before ordering. We have served more than 50,000 customers over 15 years and are rated Excellent on Trustpilot.

How to replace it

1. Isolate the water supply to the WS216B and switch off power at the mains.
2. Undo the retaining nut or union on the housing and withdraw the G843 lamp.
3. Remove the old QJ25840DE sleeve from the chamber.
4. Clean the inside of the housing and fit a new BS214 O-ring before fitting the replacement.
5. Insert the new sleeve, refit the lamp, and reassemble the housing.
6. Restore water and power, then run the system to drain briefly before using the water.