Davey QB035 Spa Circulation Filtration Pump - .25kW or 1/3HP
Davey QB035 Spa Circulation Filtration Pump - .25kW or 1/3HP is backordered and will ship as soon as it is back in stock.
Delivery and Shipping
Delivery and Shipping
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Pro-Tip: An economical alternative, and just as good, is the JA35 here.
Davey Spa Power QB035 0.25kW 0.3HP Spa Circulation & Filtration Pumps. 250W or 1/3HP. Comes complete with 40mm unions and Overmoulded AMP lead. Wet-end Head can be rotated to suit various installations (eg: side-discharge). Common on many spas including Sapphire, Heritage, Maax, Monarch and many others.
- Wet end can be rotated to suit various installations.
- 3-year Warranty Exclusive to Heater & Spa Parts.*
- Overmoulded AMP lead
- Shipped Fast from NSW, VIC, QLD.
- Can be picked up from our Factory & Showroom at 10 Industry Blvd, Carrum Downs, Vic
Dimensions:
- Length: 317mm
- Width: 153mm
- Height: 183mm
- Weight: 5.1kg
QB035 Specifications:
- Start Current: 5A
- Run Current: 1.6A
- Motor Input Power: 250W
- Motor Output Power: 180W
- RPM: 2900
Warranty:
- Davey provides a 2 year Return to Base Warranty.
- We add an additional 1 year warranty on top of Davey's (making it an exclusive 3-year Warranty)
- Warranty does not include damage due to corrosion, improper installation, etc.
Davey Circ Pump QB 035 Features:
The Davey range of QB Series SpaPower pumps are powerful and high performing booster and circulating pumps, offering you that satisfying and carefree spa experience.
- Powerful Pump Performance Robust pump design combined with powerful motor options delivers high performance, for a satisfying spa experience
- Stainless Steel Pump Shaft Corrosion resistant 316SS pump shaft to ensure years of trouble-free use, even in salt water spa pool applications, for an extended pump life
- Energy Efficient Single and two speed models available to help conserve energy during filtration cycles
- Flexible Installation Pump housing can be turned 180° for easy installation of pipework, horizontal or vertical
- Quiet Large suction and discharge outlets allow for higher performance but at lower noise levels, ensuring a powerful yet relaxing spa experience
- Enhanced Pump Design Shielded yoke design helps protect the motor from any adverse leaking from the wet end whilst still meeting all industry safety standards.
- Comes standard with Overmoulded AMP plug. Aus 3-Pin, Mini JJ or in.link plugs available. Please order separately, and notify us when ordering so we can fit it. Or, you can use your old cord.
QB 035 Reticulation Pump
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" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.5 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.
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).
PVC Pressure Pipe AS/NZ 1477 Dimensions1:
Common nominal sizes with typical outside diameters and indicative inside diameters by class.
| Imperial Name | Metric Name | Outside Diameter (OD) | Class 9 IDº | Class 12 IDº | Class 18 IDº |
|---|---|---|---|---|---|
| 1/2" | 15 mm | ~21.2–21.5 mm | 18.3 mm | 17.8 mm | |
| 3/4" | 20 mm | ~26.6–26.9 mm | 23.7 mm | 22.4 mm | |
| 1" | 25 mm | ~33.4–33.7 mm | 30.5 mm | 29.8 mm | 28.1 mm |
| 32 mm | ~42.1–42.4 mm | 38.5 mm | 37.5 mm | 35.4 mm | |
| 1.5" | 40 mm | ~48.1–48.4 mm | 45.2 mm | 44.1 mm | 42.8 mm |
| 2" | 50 mm | ~60.2–60.5 mm | 55.2 mm | 53.7 mm | 50.5 mm |
| 65 mm | ~75.2–75.5 mm | 68.9 mm | 67.0 mm | 63.2 mm | |
| 2.5" | ~73 mm |
- 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.
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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