These UVCs have a single ended bulb which is much easier to change than the old strip-light type bulb. They also have a turbulator which forces the water to flow around the bulb in a corkscrew motion to make sure it is all UVed evenly. Inlet & outlet hose sizes
- 20-40mm (0.75-1.5") Translucent hosetails let you see if the light is on Turbulator for maximum efficiency New for 2012 is the 18 36 & 55 Watt Vorton. The old models have been renamed to the 9 watt (previously 4500) the 11 watt (14000) & the 22 watt (27000). To read more on the Hozelock Vorton UVC please "