Hozelock Vorton 4500 Ultra Violet Clarifier (9W UVC) - 1551

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This unit is designed for a waterflow of up to 2200 litres per hour. It will eliminate green suspended algae in a pond of up to 3000 litres, subject to stress load and climate.

Now called Hozelock Vorton 9 UVC - 1551 in Hozelock 2012 catalogue

Very efficient design from Hozelock UK. Requires a pond pump of appproximately 2500 - 4000L/hr depending on lift

Includes a 9W UV Lamp to be fitted by the customer

Features & Specifications:

  • Both ends swivel 360deg for easy tubing alignment
  • IP44 Rated for outdoor use
  • UVC Rating: 9W / 240V
  • Max pond size in the hot climate of Australia: (with less than 750mm pond depth): 1600L (With Koi carp, Turtles or Ducks), 2400L (with goldfish)
  • Maximum water Flow-through for UVC: 2200L/h (fills a 20L bucket in 32 seconds). Slower for water sterilisation
  • Dimensions: 300mm long x 125mm diameter
  • 240V Cable length: 5m
  • Inlet/Outlet Size: 25mm, 32mm, 40mm
  • Maximum permissible pump head or lift: 6.0m (Otherwise the pressure could burst the seals) 

Guarantee: 2 years against structural failure or manufacturing fault (Not including lamp)

We recommend that for maximum benefit to a pond, some form of biological filtration should be used as well.


  • The in-built "Turbulation" of the water passing the quartz sleeved PL-S TUV bulb gives superior uniform dwell time for UV exposure & maximum efficiency - up to 50% more efficient than non-turbo models
  • Quartz glass tube covering the UV lamp permits effective penetration of UV rays.
    Ordinary glass cuts this by 90%
  • UV lamp runs at optimum operating temperature in an enclosed chamber
  • Water is kept as close as possible to the UV lamp to maximise UV efficiency
  • Single ended lamps last longer and have higher UV output 
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