Description The CUV Series Ultraviolet Clarifiers (UVC) are an important part of any filtration system. In the clarification process, water is passed through the UVC chamber and the UVC bulb flocculates (clumps) the microscopic green algae, that are suspended in the water. The flocculated algae can then be captured by a mechanical filter. To ensure clear water the UVC must be properly sized for the filtration system and the correct flow rate must be maintained through the UVC. CUV-118 Model: CUV-118 18 Watts UV-C Output Max pressure - 10 ft of head / 4.35 psi Max flow rate - 5,200 GPH 3/4" - 1 1/2" Inlet and Outlet 16 ft power cable 3 Year Warranty on fixture UV Clarifier Manual 1 UV Clarifier Manual 2 CUV-136 Model: CUV-136 36 Watts UV-C Output Max pressure - 10 ft of head / 4.35 psi Max flow rate - 9,200 GPH 3/4" - 1 1/2" Inlet and Outlet 16 ft power cable 3 Year Warranty on fixture UV Clarifier Manual 1 UV Clarifier Manual 2 CUV-172 Model: CUV-172 72 Watts UV-C Output Max pressure - 10 ft of head / 4.35 psi Max flow rate - 11,900 GPH 3/4" - 1 1/2" Inlet and Outlet 16 ft power cable 3 Year Warranty on fixture UV Clarifier Manual 1 UV Clarifier Manual 2 This product is oversized - special shipping rates may apply.