The RainFlo RF-LQS D4 Quartz Sleeve is a direct replacement for the Viqua Sterilight 602732 Quartz Sleeve, and includes o-rings. The domed 100% fused silica quartz sleeve fits D4, D4+, D4-V, IHS12-D4 and D4-V+ systems as well as the discontinued Trojan C, C4, and C4-V UV water disinfection systems.
The RF-LQS D4 quartz sleeve provides thermal protection for your ultraviolet lamp ensuring the disinfection system continues to optimally reduce bacteria and viruses in the water. For best results, this sleeve should be cleaned on a consistent basis after installation. Replace this sleeve in the event of damage or fouling.