Detailed Description: Whole House, Well Water 12 GPM UV Sterilizer Philips UV bulb Disinfect 99.90% of harmful bacteria Stainless Steel Leaves no Taste In The Water Easy To Clean Quartz Sleeve Low Cost replaceable Lamp The primary usage for a UV light is to disinfect filtered water at a certain flow rate. The Bacteria, viruses, and other microorganisms are destroyed by the UV interfering with the DNA and RNA in the organisms’ reproductive cycles. Ultraviolet light kills 99% of harmful bacteria in point-of-use filter systems and is FDA approved for disinfecting filtered water. The easily replaceable bulb is housed in a stainless steel tube and has a 9000 hour life. If your water source is known to be unsafe with microorganisms and you want to have extra protection, then you can add an UV as an additional stage to disinfect water. The UV lamp stays on continuously. As the water flows around the lamp, it is irradiated by the ultraviolet light. Water flow is restricted to 12 GPM to allow time for the UV light to be effective. The lamp slides into a quartz tube which is sealed from the water and a purple color shows through the plastic flow fittings while it is working. A 55-watt transformer powers the UV bulb. Specifications 55 W UV Sterilizer / Philips UV bulb Water Flow: 12 GPM LightPower: 55 W Dimension: (inch) 36 inch x 2.5 inch Transformer light indicator will switch off during lamp failure. Check for possible lamp burn or any connection problem In/Out Port size (MNPT): 1 inch 2 Pcs 2.5 inch clamp are included to enable you mount the UV on top of your system or on the Wall Casing Material: S.S304S.S Pressure max:125 PSI 110 V transformer included / 110VAC, /60HZ CE Listed Light lifetime: 9000 hours