Pentair 523040 Bioshield 38.25 inch quartz sleeve for model 522636Pentair Bioshield Quartz Sleeve 38.25" for Model 522636, 523040 In stock$8899
Pentair 523040 Bioshield 38.25 inch quartz sleeve for model 522636
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Pentair Bioshield Quartz Sleeve 38.25" for Model 522636, 523040

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$8899
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Quick overview

  • Genuine Pentair Factory quartz sleeve 523040 for the Bioshield system.
  • For model 522636 Sized specifically for the Bioshield UV unit model 522636.
  • 38.25 inches The full length sleeve, so it has to match the chamber exactly.
  • Quartz, not glass Quartz passes the UV wavelength that actually does the sanitizing work.
  • Restores UV output A clouded or scaled sleeve blocks the lamp even when the lamp itself is fine.
  • Lamp sold separately The high output UV lamp for this model is a separate Pentair part.
Full description and specifications ↓

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Product details

The Pentair 523040 is the 38.25 inch quartz sleeve for the Bioshield UV sanitizer, model 522636. It is the genuine Pentair replacement part.

Why quartz

The 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.

Service life

Sleeves 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.

Specifications
Brand Pentair
Manufacturer part number 523040
UPC 788379875954
Type Quartz sleeve
Length 38.25 inches
Fits Pentair Bioshield UV model 522636
Shipping weight 3.35 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What does the quartz sleeve do?
It separates the UV lamp from the water while still letting the sterilizing wavelength through. The lamp never touches pool water.
Why replace the sleeve if the lamp still lights?
Because scale and clouding on the quartz block the UV before it reaches the water. The lamp looks fine and the system does almost nothing.
Does the lamp come with it?
No. This is the sleeve only. The high output UV lamp for model 522636 is a separate Pentair part.
Will it fit another Bioshield model?
It is listed for model 522636. The sleeve is a length critical part, so match it to your unit rather than assuming it carries across.
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