Aqua Ultraviolet Twist UV 57w LAMP
Wattage
57 W
Water type
Marine + Freshwater
Fits
Aqua Ultraviolet Twist UV 57W, Aqua Ultraviolet Classic UV 57W
Part no.
A20057
Replace every
14 months
Aqua Ultraviolet Twist UV 57w LAMP
UV output fades for months before the water shows it, which is why the lamp needs replacing on a schedule rather than when problems appear. This is the genuine 57 W UV-C replacement lamp for the Aqua Ultraviolet Twist UV 57 W steriliser. Fitting a fresh lamp restores full UV-C dose to the water passing through the unit – the single biggest factor in how well a UV steriliser clarifies water or controls pathogens.
Key features
- Genuine Aqua Ultraviolet lamp – matched wattage and length for the Twist UV 57 W chamber.
- Restores full dose – UV-C output falls well before the lamp visibly dims or stops glowing, so a fresh lamp on schedule restores sterilising and clarifying performance.
- 57 W UV-C output – matched to the Twist 57 W ballast; do not fit a different wattage lamp to this unit.
- Manufacturer reference A20057 – the lamp Aqua Ultraviolet specifies for their 57 W Classic and Twist units.
Specifications
| Fits | Aqua Ultraviolet Twist UV 57 W steriliser (also fits the Classic 57 W unit – same lamp) |
|---|---|
| Wattage | 57 W UV-C |
| Manufacturer reference | A20057 |
| Replacement interval | Approximately 14 months of continuous use |
| Water type | Freshwater and marine |
Suitable for, and not suitable for
Suitable as a direct replacement for the 57 W lamp in Aqua Ultraviolet Twist and Classic units. Not suitable for the 25 W or 40 W Twist units, which need a different wattage lamp – fitting the wrong wattage lamp to a ballast it isn't matched to can shorten its life or stop it striking.
What's included
One 57 W UV-C lamp. The quartz sleeve, unit housing and ballast are not included.
Care and maintenance
Why replace a lamp that still lights up?
A UV-C lamp keeps glowing visible light long after its germicidal UV-C output has dropped below a useful dose. Aqua Ultraviolet's own guidance is to replace at around 14 months of continuous use, regardless of whether the lamp still looks fine.
Do I need to clean the sleeve at the same time?
Yes – wipe or replace the quartz sleeve whenever you change the lamp. A scaled or scratched sleeve blocks UV-C output even with a brand-new lamp fitted.
Warranty and delivery
Sold as a genuine Aqua Ultraviolet spare part. UV lamps are fragile and are packed accordingly for delivery.
Common questions
Can I use a cheaper generic UV lamp instead?
We'd recommend the genuine Aqua Ultraviolet lamp – wattage, arc length and connector all need to match the ballast, and a mismatched lamp can under-dose the water or fail early.
How do I know it's time to replace the lamp?
Go by the calendar, not appearance. Replace at around 14 months of continuous use even if the lamp still lights up – UV-C output drops well before the visible light does.
Will this fit my Classic series 57 W unit as well as my Twist?
Yes – the Classic and Twist 57 W units use the same lamp.
