UVC Complete 15W UV System for Spas
UVC Complete 15W UV System for Spas is temporarily out of stock and will ship as soon as it's available.
Don't Guess - Ask Us!
Don't Guess - Ask Us!
Not sure if it’s the right part? Send us a message and a photo of what you’re replacing, or what you need, and we’ll help make sure you get the right part the first time.
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Delivery and Shipping Info
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Warranty Information
Warranty Information
UVC Complete 15W UV System for Spas
UVC Complete 15W UV System for Spas is temporarily out of stock and will ship as soon as it's available.
UVC Complete 15W UV System for Spas - OEM as used in Fisher & Vortex® Spas
A complete 15-watt UV-C sanitising system for spas, supplied as a full assembly ready to plumb in. UV-C treats the water as it passes through the chamber, which eases the load on your sanitiser and helps with water clarity and the stale chloramine smell that builds up in a well-used spa.
Please read the service life and spare parts sections below before ordering. This unit is supplied and replaced as a complete system.
- We keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.
- Shipped from VIC, NSW, WA, QLD
Service Life: Roughly 1 Year in a Spa
Alternative - If You Want a More Serviceable System
- CSN UltraZone UV & Ozone Spa Sanitising System — combines UV-C with ozone, also sold as the Sapphire Spas Clearzone (buy here)
UV Is a Supplement, Not a Replacement
UV-C only works on water that is passing through the chamber while the lamp is powered. It leaves no residual behind in the spa, so it cannot protect the water between circulation cycles or deal with anything introduced by the next bather.
You still need a residual sanitiser. UV will typically let you run a lower, steadier chlorine or bromine level and cut back on shock dosing, but it does not replace it. Any UV product marketed as a total chemical replacement for a domestic spa should be treated with suspicion.
Specifications
- Part number: SW-D060234
- Model: B450977
- Manufacturer: A-Tech / Vortex®
- Lamp: 15 watt UV-C
- Plumbing: suits 40mm pressure PVC and 19mm (3/4") hose
- Supplied as: complete system
- Rated service life: 3,000-6,000 hours lamp run time
- Plug Type: AMP
Frequently Asked Questions
Will it fit my spa?
It suits 40mm pressure PVC and 19mm (3/4") hose. Check what your circulation line is plumbed in before ordering. If you are not sure, send us a photo of the pipework and we will tell you.
Can I stop using chlorine or bromine?
No. UV has no residual effect and only treats water passing the lamp. You still need a residual sanitiser, though you can generally run it at a lower level.
The lamp is still glowing after two years. Is it still working?
Probably not effectively. UV-C output decays long before the lamp stops producing visible light. Go by run hours, not by whether it lights up.
Before You Order
Confirm this product is correct for your equipment. Check your plumbing size and available space, seek professional assistance, or contact us with photos, model details and any labels. As with all products, this must be installed by a qualified and experienced person. We do not recommend or support DIY spa builds.
Common search terms: A-Tech B450977, SW-D060234, 15W spa UV steriliser, UVC spa sanitiser, ultraviolet spa water treatment, 15 watt UV-C lamp spa, spa UV system 40mm, WWDG SpaPro.
To the layperson, plumbing sizes and their names can be confusing due to the nominal sizes and naming conventions used.
This is not something we made up. Plumbers and manufacturers have used nominal (meaning ‘by name only’) sizing for decades.
Simply put, in plumbing, named sizes are often not the actual measurements of the pipe, fitting, or part. A PVC pipe called “50mm” or “2"” does not measure 50 mm anywhere. Instead, it follows nominal sizing, an internationally-standardised naming system.
Almost all fittings we use in the pool & spa industry use “pressure PVC” pipe & fittings. Do not confuse with “DWV” or other pipe & fittings and their names and sizes.
Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:
| Imperial Name | Metric Name | Pipe Diameter (OD) |
|---|---|---|
| 1/2" | 15mm | ~21.2–21.5 mm |
| 3/4" | 20mm | ~26.6–26.9 mm |
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.8 mm |
| 2.5" | 65 mm | ~75.2–75.5 mm |
To reiterate, these are nominal sizes and are designed to fit matching fittings — not to measure what their name suggests. These are based on PVC Pressure Pipe AS/NZ 1477 Dimensions1.
- º Internal diameters vary slightly by manufacturer and class.
- 1 Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.
Understanding Plumbing Sizes & Nominal Measurements
Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems and other plumbing areas so that pipes and fittings remain compatible.
Why pipe sizes don’t match the measurements
The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate.
Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.
How to Measure Pipe Correctly
-
Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
- Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
- The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).
Hose & Tube Dimensions
Common flexible hose sizes used in pool/spa systems (approximate IDs).
| Imperial Name | Metric Name | Inside Diameter (ID) |
|---|---|---|
| 3/8" | 9–10 mm | ~9 mm |
| 3/4" | 19 mm | ~19 mm |
BSP – British Standard Pipe Thread Sizes
BSP thread names are also nominal. The thread OD will not equal the nominal name.
| BSP Thread Size Naming | Outside Diameter (mm / inch) | TPI |
|---|---|---|
| 1/16" BSP | 7.7 mm / 0.304" | 28 |
| 1/8" BSP | 9.7 mm / 0.383" | 28 |
| 1/4" BSP | 13.16 mm / 0.518" | 19 |
| 3/8" BSP | 16.66 mm / 0.656" | 19 |
| 1/2" BSP / 15 mm | 20.99 mm / 0.825" | 14 |
| 5/8" BSP | 22.99 mm / 0.902" | 14 |
| 3/4" BSP / 20 mm | 26.44 mm / 1.041" | 14 |
| 7/8" BSP | 30.20 mm / 1.189" | 14 |
| 1" BSP / 25 mm | 33.25 mm / 1.309" | 11 |
| 1-1/4" BSP | 41.91 mm / 1.650" | 11 |
| 1-1/2" BSP / 40 mm | 47.80 mm / 1.882" | 11 |
| 2" BSP / 50 mm | 59.61 mm / 2.347" | 11 |
| 2-1/4" BSP | 65.71 mm / 2.587" | 11 |
| 2-1/2" BSP | 75.18 mm / 2.960" | 11 |
| 3" BSP | 87.88 mm / 3.460" | 11 |
| 4" BSP | 113.03 mm / 4.450" | 11 |
| 5" BSP | 138.43 mm / 5.450" | 11 |
| 6" BSP | 163.83 mm / 6.450" | 11 |
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SW-D060234
