Quartz Sleeve for Watts - Hydro-Safe HSUV-SS-5-1 UV Light Bulb for Germicidal Water Treatment 079340197336 This replacement germicidal bulb has

This replacement germicidal bulb has a medium Bipin (2-pin) base on both ends that are used for air purification

the bulbs should be replaced annually

Quartz Sleeve

NUR Expedio 5000 compatible UV lamp - Drawing (PDF)

The lamp bulb works well with the following models and part numbers:

Quartz Sleeve for Watts - Hydro-Safe HSUV-SS-5-1 UV Light Bulb for Germicidal Water Treatment 079340197336 This replacement germicidal bulb hasReplacement Quartz Sleeve for Watts Hydro Safe HSUV SS 5 1 UV Light Bulb for Germicidal Water Treatment In order for your germicidal water system to work effectively, it is imperative that the quartz sleeve is completely clear. A foggy or dirty quartz sleeve can significantly attenuate the power of your UVC bulb, resulting in substantially less sterilizing power. A good way to think about it is that if you have trouble seeing through the sleeve then