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Viqua VIQUA F4-50 Model 50percent UVT NSF Class B 15 GPM UV System w/ Sensor - 650640-R 650640-R

Viqua F4-50+ UV System with Sensor, 50% UVT, NSF 55 Class B, 15 GPM, 650640-R

4 - 6 weeks
$2,222.75 $2,420.00
(You save $197.25)


The VIQUA F4-50+ provides extra peace of mind with its NSF certification, UV sensor, and effectively disinfects water with UVT values as low as 50%. For flow rates of 15 GPM or lower, the F4-50+ will reduce normally occurring nuisance microorganisms, and the UV sensor will provide constant feedback on UV disinfection. Capable of 100-240V, 50-60Hz.


PDF icon  Lamp (602807) - Replace every 12 months
PDF icon  Quartz Sleeve (602734) - Replace every 24 months or as needed
PDF icon  Lamp/Sleeve Combo Kit (602810-104)


nsf.pngNSF CLASS B: Meets NSF 55 Class B standards for recommended flow rate

sensor.pngUV SENSOR: Monitors/indicates UV dose intensity

eol.pngEND-OF-LIFE TIMER: Counts down the days until annual lamp replacement

led.pngLED STATUS MONITOR: Displays system components’ status and functionality

2xoutput.png2X OUTPUT: 2X the output of standard lamps


  • Flow Rate: 15 Gallons Per Minute
  • Power: 100-240V   50-60Hz   130W   N. American Plug
  • Application: Point-of-Entry
  • Chamber Dimensions: 44.5" x 4"
  • Inlet Dimensions: 1" MPT
  • Outlet Dimensions: 1" MPT


  • Chamber: 10 Years
  • Electric: 3 Years
  • Lamp & Sleeve: 1 Year


PDF iconVIQUA F4-50+ Owner's Manual

PDF iconVIQUA F4-50+ Spec Sheet

PDF iconVIQUA F4-50+ Sensor Replacement Manual

PDF iconLamp and Sleeve Replacement Instructions

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