Genuine Viqua quartz sleeve for a Trojan Aqua UV605 model systems. The 650147 Quartz sleeve provides thermal protection for the system UV lamp and protects it from possible water damage. 

The quartz material used in Trojan Aqua UV605 systems quartz sleeve is a 100% fused silica which lends to the sleeve's high UV light transmittance through the water. Each Trojan Aqua 650147 quartz sleeve is tested, ensuring that the lamp delivers the appropriate intensity for your Trojan System. You should replace the sleeve if it fouled or is broken.   
Applications:

• Used in UV605 Model Systems
• Domed on One End