Pentair Quartz Sleeve 50.75" | BioShield UV System | 523041 Pool Liner Accessories Inspect the weir each spring

Inspect the weir each spring when reopening the pool

For home spas that get heavy use or for commercial spas

or deteriorated

This Head Immobilizer is easy to use and is compatible with all spineboards on the market

A damaged or cracked bottom manifold allows water to bypass the filter media entirely

Pentair Quartz Sleeve 50.75" | BioShield UV System | 523041 Pool Liner Accessories Inspect the weir each springThe Pentair Quartz Sleeve (523041) is the OEM replacement quartz sleeve for the Pentair BioShield UV System 120 Watt (Model 522637), measuring 50. 75 inches in length. The quartz sleeve surrounds the UV lamp inside the BioShield sterilizer, transmitting ultraviolet light into the water flow while isolating the lamp from direct water contact. A cracked, clouded, or mineral scaled sleeve reduces UV transmittance and compromises disinfection output.