Davey Spaquip - Spa Power 750 / 1000 / 1200 Heater Assembly - SP750 SP1000 SP1200
Davey Spaquip - Spa Power 750 / 1000 / 1200 Heater Assembly - SP750 SP1000 SP1200 - is backordered and will ship as soon as it is back in stock.
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Davey Spaquip - Spa Power 750 / 1000 / 1200 Heater Assembly - SP750...
Davey Spaquip - Spa Power 750 / 1000 / 1200 Heater Assembly - SP750 SP1000 SP1200 - is backordered and will ship as soon as it is back in stock.
Genuine Davey SpaQuip Spa Power heater assembly to suit SP750, SP1000, and SP1200 spa controllers. Available in 2.0kW, 3.0kW, 3.5kW, 4.5kW, 5.5kW, and 6.0kW sizes.
This listing covers a range of Davey SpaQuip / Spa Power heater assemblies and heater elements used in Spa Power 750, Spa Power 1000, and Spa Power 1200 systems.
Heater Element Sizes & Models
- Single Element - 2.0kW Heater - 15146-20
- Single Element - 3.0kW / 3.5kW Heater - 15146-30
- Twin Element - 3.0kW / 3.5kW Heater - Q80046T / Q80064T / Q80064
- Twin Element - 4.5kW Heater - Q80047T / Q80065T / Q80065
- Twin Element - 5.5kW / 6.0kW Heater - Q80048T / Q80066T / Q80066
Common System References
Suitable for systems commonly referred to as:
- Davey Spa Power 750
- Davey Spa Power 1000
- Davey Spa Power 1200
- SpaQuip SP750
- SpaQuip SP1000
- SpaQuip SP1200
- Davey SP750
- Davey SP1000
- Davey SP1200
Important - Requires Licensed Electrician
- Heaters no longer come with wiring looms as pictured. Your electrician may need to make new looms to suit your controller.
- Good, solid electrical connections are essential. Poor connections may cause damage.
-
For SP750 / SP100 Only:
- Click here for SP750 / SP1000 wiring instructions for reference by your electrician only.
- Older instructions may mention loom wiring that no longer comes with the heater. As above, your electrician may need to make new cables.
Single Element Heater Notes
- The temperature sensor in new single-element heaters with grey cable is not used in SP750 / SP1000 control systems.
- The secondary Klixon high-limit switch wire from the PCB may need to be looped.
- Only one Klixon is necessary on single-element heater setups.
Warranty
1-Year Return to Base Warranty. Does not cover damage due to corrosive water.
In plumbing, named sizes are not the actual measurements. A pipe called “50mm” or “2"” does not measure 50 mm across. Instead, it follows nominal sizing, an internationally-standardised naming system.
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 |
These are nominal sizes and are designed to fit matching fittings — not to measure exactly 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 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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15146-20sp