Omnipure OKDF30/1 Inline Replacement Filter - KDF & Carbon, JJ or BB Fitting NZ
Omnipure OKDF30/1 Inline Replacement Filter - KDF & Carbon, JJ or BB Fitting NZ
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The Omnipure OKDF30/1 is a two-media inline replacement cartridge combining KDF (high-purity copper-zinc alloy) and GAC (granular activated carbon). Also known as the K5567.
The KDF works through electrolytic and oxidation reactions to reduce a wide range of contaminants and provides a bacteriostatic effect hostile to algae, fungi, and bacteria. The GAC adsorbs and traps contaminants that affect taste and odour. Together they deliver superior filtration to 30,000 litres.
Cyst safe. Suitable for underbench filters, water coolers, beverage dispensers, coffee machines, and ice-makers.
For mains (town) water supply only. A pressure reduction valve (PRV) must be installed prior to the filter.
Choose your fitting type at checkout — JJ (John Guest push-fit) or BB (female threaded ends).
Sold as a single cartridge.
Fitting types
| Type | Connection | Notes |
|---|---|---|
| JJ Type | 1/4" John Guest push-to-fit quick-connect | Cut tubing square across and push until it bottoms out. Remove factory-fitted protective tubing plugs before installing — hold collet against filter body with a fingernail and gently pull out. Do not force. |
| BB Type | 1/4" female threaded ends | Wrap threads with thread sealing tape and tighten firmly before use. |
Key specs
| Spec | Detail |
|---|---|
| Media | KDF (copper-zinc alloy) + GAC (granular activated carbon) |
| Flow rate | Maximum 5 LPM |
| Capacity | 30,000 litres |
| Replacement interval | At least annually, or when capacity is reached or flow slows |
| Cyst safe | Yes |
| Model / SKU | OKDF30/1 | K5567 |
| Water source | Mains (town supply) only — not suitable for rainwater, tank, bore, or surface water |
| PRV required | Yes — must be installed prior to filter |
Questions
What does KDF media do?
KDF is a high-purity copper-zinc alloy that reduces contaminants through electrolytic and oxidation reactions. It also provides a bacteriostatic effect, creating an environment hostile to algae, fungi, and bacteria — which extends the useful life of the GAC and keeps the cartridge cleaner between replacements.
What does GAC do?
GAC (granular activated carbon) adsorbs and traps contaminants that affect taste and odour, including chlorine and related by-products.
Which fitting type should I choose?
If your existing system uses 1/4" push-fit tubing, choose JJ. If your system connects via male threaded fittings, choose BB. If you're unsure, get in touch and we'll help you identify the right type before you order.
How often do I need to replace it?
At least annually, or when 30,000 litres is reached, or when flow noticeably slows — whichever comes first. In commercial or office settings where usage is higher, replacement may be needed more frequently.
Do I need a PRV?
Yes — a pressure reduction valve must be installed prior to the filter. Flow must not exceed 5 LPM.
Can I use it with rainwater, tank, or bore water?
No — the OKDF30/1 is designed for mains (town) water supply only. It is not suitable for rainwater, tank, bore, or surface water.
How do I install the JJ push-fit version?
Before installing, carefully remove the small protective tubing plugs fitted at the factory. Hold the collet fitting against the filter body with a fingernail and gently pull the tubing out — do not force it, as this can damage the fitting. Cut your tubing square across (not diagonal) and push firmly into the fitting until it bottoms out. Check flow direction — water must flow through KDF first, then GAC. Flush for 5 minutes before use.
How do I install the BB threaded version?
Wrap the male threads on your fittings with thread sealing tape, screw on firmly, and check flow direction — water must flow through KDF first, then GAC. Flush for 5 minutes before use.
