SX300 - 3HP - 1-Speed Jet Pump - Universal Spa Booster Pump - Spatex
SX300 - 3HP - 1-Speed Jet Pump - Universal Spa Booster Pump - Spatex - 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.
Delivery and Shipping Info
Delivery and Shipping Info
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Warranty Information
Warranty Information
SX300 - 3HP - 1-Speed Jet Pump - Universal Spa Booster Pump - Spatex
SX300 - 3HP - 1-Speed Jet Pump - Universal Spa Booster Pump - Spatex - is temporarily out of stock and will ship as soon as it's available.
SX300 - 3HP - 1-Speed Jet Pump - Universal Spa Booster Pump - Spatex
SX300 One-Speed 3.0HP Universal Spa Jet Booster Pump - Perfect for replacing the Aqua-Flo (Aquaflo) XP2 3.0HP, Balboa, Davey QB3001, LX Whirlpool LP300, Spanet XS30S, Waterway, and many other spa jet booster pumps.
- Physically Stocked, unlike most "drop-shipping" websites.
- Shipped from VIC, NSW, WA, QLD
Plug & Lead Types:
- AMP plug for Balboa, Joyonway, Gecko in.y*
- Overmoulded AMP plug for Spanet, Davey
- C38 (Aus standard 3-pin)
-
Any other plug type (eg: Mini JJ, Gecko in.link, etc): <-- Comes with Inline Connector - Electrician can use old plug to fit to new pump cable.
Included in Package:
- 1 x Spatex SX300 Jet Pump - 3.0HP 1-Speed
- 2 x Standard 50mm Barrel Unions - Suits 50mm PVC (61mm OD Pipe)
- 2 x Split Nut Adaptors - for adapting from older Coarse Thread eg: Maxiflow or pre-2007 Davey QB Jet pumps. Can also be used to replace broken nuts on this style of pump.
General Information:
- Supplied with 50mm / 2" unions and included split nuts. Split nuts make retrofitting of other pump brands with different threads, such as Spa-quip (SpaQuip) Maxiflow, Spa Systems Piranha and others.
- Retrofits Aqua-Flo XP2, Davey QB, LX LP/WP Whirlpool, Waterway and many other pumps without the need to plumbing changes.
- 230v, 50Hz, 3.0hp, 2.2kw, 10A
- Wet-end can be rotated.
- See images for dimensions of pump performance curves.
- 2 year warranty*
- User & Installation Manual
These pumps can replace most major brands of spa pumps directly, without the need to replumbing. Their unique split-union adaptors allow them to be used as retrofit pumps where the older pump may have different threads.
Replacing a SpaQuip Maxiflow Pump?
Please refer to our Maxiflow pump replacement information page. That page has images and information needed when replacing a Spa-Quip Maxiflow pump.
This is the closest replacement pump for both the SpaQuip Maxiflow 3.0HP 1-Speed and 3.5HP 1-Speed pumps (old part number Q6885 for the 3.5HP version). The old 3.5HP Maxiflow drew only around 2100W, so it is closer to a 3.0HP pump than the badge suggests. No other pump is a better match. Ensure you check dimensions before ordering.
About the Spatex brand:
Spatex has over 30 years in the Australian spa industry. They've built these pumps with high-end bearings, mechanical seals, and quality materials. They exceed OEM specifications for all major brands of pumps. These pumps have been welcomed by the spa industry and are used by the best spa technicians around.
QB3001, LP300, 05253002, Nidec Fir S.r.l. P/n EMM08002351
Aqua-Flo XP2 / XP2e cross-reference: if your old pump is stamped or labelled with any of these part numbers, model numbers or codes, this SX300 is the correct drop-in replacement (identical 50mm plumbing):
XP2-903014, XP2e-903014, XP3-903014, A-XP2e-3001-AMP, 05250000, 05250001, 05250002, 05250003, 05250004, 05250005, 05250006, 05250007, 05250008, 05250009, 05250010, 05250011, 05250070, 05250801, 05250919, 05250934, 05250939, 05250956, 08240500, 08240501, 08240502, 05253000, 05253002, APUM42MS1A, 06199, 080052, 93546690, 93556690
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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SX300-AMP-Balboa
