QTZ36648 Wedeco Quartz Replacement Quartz sleeve The quartz sleeve includes the

The quartz sleeve includes the O-ring at no extra charge

or for any more advice

0m³/hour and are fine to be left turned on for long periods (during periods of shutdown for example) but care will be needed when flow resumes

As a quick summary

It's a high quality UV bulb that will last 1 year before it needs replacing

QTZ36648 Wedeco Quartz Replacement Quartz sleeve The quartz sleeve includes theThe Wedeco QTZ36648 replacement is the quartz sleeve that replaces the quartz in the Wedeco Aquada Altima, Proxima and Maxima type 2 and 4 systems. These shouldn't need replacing too often as they're resistant to thermal shock and corrosion. The only time you'll need to replace them is if they get broken (properly installed filtration helps with that) or when they become cloudy to look at. You should perform yearly maintenance on them still,