The Sterilight QS-330 is the correct replacement quartz sleeve for the following UV systems:
The Trojan Sterilight QS-330 Replacement Quartz Sleeve fits the Sterilight S2Q-PA, S2Q, S2Q-GOLD, and SSM-17 UV water disinfection systems. This Sterilight replacement sleeve features an open-ended style and 100% fused silica construction. This UV quartz sleeve surrounds the UV bulb and ensures a high transmittance of UV light through the sleeve and to the water. This Sterilight quartz sleeve measures 14.8 inches in length and includes two O-rings.
Trojan Sterilight QS-330 Replacement Quartz Sleeve specifications: