Astralpool CA 280 Sand / Media Filter — 26" 40mm MPV — Pickup Carrum Downs, Vic Only
Astralpool CA 280 Sand / Media Filter — 26" 40mm MPV — Pickup Carrum Downs, Vic Only is temporarily out of stock and will ship as soon as it's available.
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Astralpool CA 280 Sand / Media Filter — 26" 40mm MPV — Pickup ...
Astralpool CA 280 Sand / Media Filter — 26" 40mm MPV — Pickup Carrum Downs, Vic Only is temporarily out of stock and will ship as soon as it's available.
Astralpool CA 280 Sand / Media Filter — 26" 40mm MPV
The Astralpool CA 280 is the entry model in Astralpool's mid-level CA filter range — a premium Australian-made series built for high strength, long life, efficient backwashing and reliable filtration. The 26" (665 mm) tank with 40mm multiport valve runs on glass media and is a popular choice for residential pool applications.
- Physically Stocked, unlike most "drop-shipping" websites.
- Genuine Authorised Dealer
Documentation: Brochure | Manual
Warranty: 10 Years Tank | 1 Year Parts | 1 Year Labour
*Subject to change - Check Warranty Details Here
- Authorised Astralpool Dealer.
- Spare Parts are easy!
- Warranty is easy!
Glass Media Required — CA 280
- Coarse: 3 x 15kg Coarse Glass Media
- Fine: 5 x 15kg Fine Glass Media
Astralpool CA Filter Features
- Designed in Australia and made for Australian conditions
- Fully injection moulded tank for high strength and long service life
- Premium 10-lateral underdrain for low pressure loss
- Efficient backwashing design helps save water
- Quick-lock ring design secures valve in seconds
- Engineered for optimal flow rates, simple installation, and easy servicing
Specifications
| Product | CA 280 |
|---|---|
| Part Number | 10098 |
| Tank Diameter | 665 mm (26") |
| Filter Area | 0.30 sq m |
| Port Size | 40 mm |
| 6 Hour Turnover | 100,800 L |
| 8 Hour Turnover | 134,400 L |
| Glass Media Coarse | 3 x 15kg bags |
| Glass Media Fine | 5 x 15kg bags |
| Height (with valve installed) | 102.5 cm |
| Width (with valve installed) | 66.5 cm |
| Shipping Weight (with valve installed) | 20 kg |
Other Astralpool Sand & Media Filters
CA Range (Mid-level): CA 280 – 26" 40mm (this filter) | CA 300 – 26" 50mm | CA 340 – 29" 50mm | CA 400 – 32" 50mm
ECA Range (Entry-level): ECA 550 – 23" | ECA 650 – 26"
APV Range (Top-level Fibreglass): APV 650 – 25" | APV 700B – 28" | APV 800 – 32" | APV 900 – 36"
Glass Media: 15kg Coarse Glass Media | 15kg Fine Glass Media
Spare Parts: Astralpool MPV Multiport Valve Parts
Manufacturer Catalogues, Diagrams & Part Numbers
Need exploded views, spare part numbers, product numbers, diagrams, or more product information? See the manufacturer catalogues: Astralpool Catalogue 2026 | Zodiac Catalogue 2026
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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