All Sterilight UV systems include a quartz sleeve, which surrounds the lamp. The quartz material used in R-Can's quartz sleeves are a 100% fused silica which lend to the sleeve's high transmittance. A high transmittance is important as the UV light must travel through the sleeve to get to the water.  

There are a variety of quartz sleeve designs, depending on the system that they are being used in. The QS-320 is a domed quartz sleeve which is used in the Platinum™ and Cobalt™ series only. All replacement sleeves are shipped with two 410867 O-rings.
The QS-320 Quartz Sleeve is compatible with the SPV-6, SC-320, SCV320-DWS12, SC320-DWS22, SCM-320, SCV-320, and the SP320-HO UV systems.
Specifications:

• Origin: Fabricated in the USA
• Warranty: One year manufacturer warranty