Zodiac CF Series Cartridge Filter 50mm Union (Imperial) - W89060112
Zodiac CF Series Cartridge Filter 50mm Union (Imperial) - W89060112 is temporarily out of stock and will ship as soon as it's available.
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Warranty Information
Warranty Information
Zodiac CF Series Cartridge Filter 50mm Union (Imperial) - W89060112
Zodiac CF Series Cartridge Filter 50mm Union (Imperial) - W89060112 is temporarily out of stock and will ship as soon as it's available.
Zodiac CF Series Cartridge Filter 50mm Union (Imperial) - W89060112
Genuine replacement 50mm union (Imperial version) for Zodiac CF Series cartridge filters. Two unions are used per filter.
Part Number 13 in Diagram.
- Physically Stocked, unlike most "drop-shipping" websites.
- Shipped from VIC, NSW, WA, QLD
Specifications
| Zodiac Part Number | W89060112 |
| Manufacturer Description | 50mm Union for Cartridge Filters (Imperial) |
| Size | 50mm |
| Version | Imperial |
| Diagram Reference | No. 12 (Zodiac CF) |
| Quantity Per Filter | 2 |
Fits
- Zodiac CF Series (Titan Series) cartridge filters: CF75, CF100, CF150
Check Your Union Before Ordering
Zodiac lists four CF Series unions: 40mm Imperial (W89060110), 40mm Metric (W89060111), 50mm Imperial (W89060112) and 50mm Metric (W89060113). This listing is the 50mm Imperial version. Match the part number on your existing union, or contact us with a photo.
Emaux CF Series filters list their unions under different part numbers: 89060114 (1.5 inch) and 89060115 (2.0 inch).
Safety
The filter operates under high pressure. Air that gets into the system during servicing can become pressurised and blow the lid off. Turn the pump off before loosening the lid.
Related Zodiac CF Series Parts
- Air Release Valve W89060102 (No. 1)
- Oil Pressure Gauge 50psi W06011021 (No. 2)
- Connector for Pressure Gauge/Stopper W01111048 (No. 2)
- Ring Lock W01021006 (No. 3)
- Cartridge Filter Lid W01011002 (No. 4)
- Lid O-Ring W02011034 (No. 5)
- Pressure Release Valve W89060109 (No. 10)
- 40mm Union (Imperial) W89060110 (No. 12)
- Plug W01011015 (No. 13)
- Air Vent Pipe Fastener W01011007 (No. 14)
- Replacement elements: CF75 W88270103, CF100 W88270104, CF150 W88270105 (No. 15)
Manufacturer Catalogues, Diagrams & Part Numbers: Need exploded views, spare part numbers, product numbers, diagrams, or more product information? See the manufacturer catalogues below.
Important Before Ordering: Please ensure you order correctly. Confirm this product is suitable before ordering. Use the catalogues above, seek professional assistance, or contact us with photos of your existing part, model details, serial numbers, and any labels.
As with all products, these must be diagnosed and fitted by a qualified and experienced person. This is a special-order item.
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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W89060112
