The PUV-16-Sleeve is a high quality replacement sleeve for Pelican Water UV Systems. All Pelican Water UV systems include this quartz sleeve, which surrounds the lamp. The quartz material used in Pelican Water 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. All Pelican Water sleeves have been tested in order to ensure the VIQUA lamps deliver the appropriate intensity in each system that is offered. Sleeve should be replaced every 24 months. The PUV-B-Sleeve replacement fits the PUV-16 Series Pelican Water UV water disinfection systems.