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-740 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.
NOTE: The QS-740 Quartz Sleeve is compatible with the SPV-15, SPV-740, SC-740, SCM-740, SP-740-HO, and the SCV-740.