{"product_id":"pentair-523040-bioshield-quartz-sleeve-38-25-for-model-522636","title":"Pentair Bioshield Quartz Sleeve 38.25\" for Model 522636, 523040","description":"\u003cp\u003eThe Pentair 523040 is the 38.25 inch quartz sleeve for the Bioshield UV sanitizer, model 522636. It is the genuine Pentair replacement part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy quartz\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe sleeve is the barrier between the UV lamp and the water. Ordinary glass would hold the water back but block most of the useful ultraviolet; quartz passes it. That is the whole reason the part exists, and it is why a scaled or clouded sleeve quietly disables a system that still looks like it is running.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eService life\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSleeves scale rather than break. Water hardness and years of running lay down a film that the lamp cannot get through, and by then the water is no longer being treated. If cleaning does not bring the sleeve back to clear, replace it. The lamp is a separate item, and many owners change both at once so the service interval stays simple.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48626107941076,"sku":"PAC-451-3020","price":88.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_2b771ea1-b825-4e33-a3ae-3b69f749026b.jpg?v=1788704891","url":"https:\/\/www.activepoolsupply.com\/products\/pentair-523040-bioshield-quartz-sleeve-38-25-for-model-522636","provider":"Active Pool Supply","version":"1.0","type":"link"}