Astralpool ZX / Zodiac ZCF Titan / Filtrite CF Filter Lid with Handles & Locking Ring
Astralpool ZX / Zodiac ZCF Titan / Filtrite CF Filter Lid with Handles & Locking Ring 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*
Free Shipping over $99 for most products. Choose Express Post for fastest shipping!
Astralpool ZX / Zodiac ZCF Titan / Filtrite CF Filter Lid with Hand...
Astralpool ZX / Zodiac ZCF Titan / Filtrite CF Filter Lid with Handles & Locking Ring is temporarily out of stock and will ship as soon as it's available.
Genuine AstralPool / Hurlcon ZX / Zodiac ZCF Cartridge Filter Lid Assembly with Locking Ring
Genuine AstralPool / Hurlcon ZX cartridge filter lid assembly, supplied complete with locking ring and air bleed assembly. This replacement lid is used on AstralPool ZX, Hurlcon ZX, Zodiac ZCF / Titan ZCF, Astral SMART and selected re-branded cartridge filters that use the ZX-style lid and tank design.
Use this lid assembly to replace a cracked, damaged, leaking or hard-to-tighten filter lid. These filters have been sold under several brand names over the years, and the lid colour has changed across different production runs, so always check the model and style before ordering.
Fast Australia-wide shipping or in-store pickup available.
What’s Included
- Complete cartridge filter lid top
- New locking ring
- Air bleed assembly
- Air bleed O-ring
Colour note: These lids have previously been supplied in grey, beige and black depending on age and brand. Current production is usually black. Colour may differ from the original lid fitted to your filter.
Important: This listing is for the lid assembly only. It does not include the large tank body O-ring / lid O-ring unless specifically shown or stated. If you need the large tank O-ring, see the linked O-ring listing below.
Compatible Models
AstralPool / Hurlcon ZX Series cartridge filters:
- ZX50 / ZX 50
- ZX75 / ZX 75
- ZX100 / ZX 100
- ZX150 / ZX 150
- ZX200 / ZX 200
- ZX250 / ZX 250
- ZX310 / ZX 310
Zodiac ZCF / Titan ZCF cartridge filters:
- ZCF75 / ZCF 75
- ZCF100 / ZCF 100
- ZCF150 / ZCF 150
- ZCF200 / ZCF 200
Astral Leisure Pools SMART cartridge filters:
- SMART 350 / Smart 350
- SMART 450 / Smart 450
- SMART 550 / Smart 550
Also commonly cross-referenced with selected re-branded ZX-style filters, including:
- Filtrite CF50 / CF 50
- Filtrite CF75 / CF 75
- Filtrite CF100 / CF 100
- Filtrite CF150 / CF 150
- Filtrite CF200 / CF 200
- Filtrite CF250 / CF 250
- SpaPro X50 / X 50
- SpaPro X100 / X 100
- SpaPro X150 / X 150
- SpaPro X200 / X 200
- WWDG CF100 / CF 100
- WWDG CF150 / CF 150
- WWDG CF200 / CF 200
- Astral IX / IX50 inline leaf canisters where the same ZX-style lid assembly is used
Part Numbers & Search References
- SP7820502
- SP 7820502
- 7820502
- APA302685
- APA_302-685
- AstralPool ZX filter lid
- Hurlcon ZX filter lid
- Zodiac ZCF filter lid
- Titan ZCF filter lid
- ZX cartridge filter lid and locking ring
- ZCF cartridge filter lid and locking ring
Why Replace The Filter Lid?
- Replace a cracked, sun-damaged or brittle lid
- Fix leaks from the lid or locking ring area
- Restore correct sealing and filter pressure
- Replace a damaged or hard-to-tighten locking ring
- Reduce the chance of air being drawn into the filtration system
- Help prevent unsafe operation of a damaged pressurised filter
Need The Large Tank O-Ring?
This lid assembly does not include the large tank body O-ring. If your existing lid and locking ring are still serviceable but the filter is leaking around the seal, you may only need the O-ring.
Click here for the AstralPool / Hurlcon ZX cartridge filter tank O-ring.
Check Before Ordering
Because these filters were sold under different brands and colours, compare the shape of your existing lid, locking ring and filter body before ordering. If you are unsure, send us a photo of the filter label, lid and tank and we can help confirm the correct part.
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 |
Payment & Security
We accept: Visa, Mastercard, Amex, Apple Pay, Google Pay, ShopPay, Paypal, Zip, Afterpay
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
SP7820502