PURETEC PUREMIX REPLACEMENT CARTRIDGE
Puretec Z7-R PureMix Z7 Replacement Cartridge
The Puretec Z7-R is the genuine replacement cartridge for the Puretec PureMix Z7 under-sink filtration system.
Puretec specifically designs the Z7 filtration platform for mains, rain, harsh and rural water supplies, including applications with higher sediment levels or older pipe infrastructure.
The Z7-R uses Puretec's quick-twist cartridge format and forms the multi-stage filtration component of the PureMix Z7 system, combining sediment filtration, activated carbon treatment, approximately 1 micron nominal filtration, Z Plus technology and anti-scaling protection.
Quick answer:
the Puretec Z7-R is the manufacturer-specified replacement cartridge for the PureMix Z7. It is designed for applications where sediment loading or water conditions can be more demanding, with a listed system flow of 9.5 L/min at 420 kPa, approximately 1 micron nominal filtration and a quick quarter-turn cartridge replacement design.
PRODUCT AT A GLANCE
Puretec Z7-R Key Details
Z7-R
Genuine Replacement
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1 Micron
Nominal Filtration
9.5 L/min
Listed System Flow
Quick Twist
Cartridge Change
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SYSTEM COMPATIBILITY
Which System Does the Z7-R Fit?
The Z7-R is designed specifically as the replacement cartridge for the Puretec PureMix Z7 under-sink water filtration system.
The current PureMix Z7 system is identified by Puretec as model PUREMIX-Z7-LF, with Z7-R listed as its replacement cartridge.
Check the cartridge model before ordering.
Puretec produces several Z Series quick-change cartridges with different filtration specifications. The Z7-R should not be assumed to replace Z1-R, Z2-R, Z6-R, Z8-R or other Puretec cartridges.
HARSH WATER APPLICATIONS
Designed for Higher Sediment & Challenging Water Conditions
Puretec positions the PureMix Z7 specifically for installations where water conditions can be more demanding than a standard mains-water application.
Rural Water Supplies
The Z7 platform is designed for rural applications where sediment levels and incoming water conditions may differ from standard urban mains water.
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Rainwater Applications
Puretec lists rainwater among the intended supply types for the PureMix Z7, subject to the quality and treatment requirements of the incoming water.
Older Pipe Infrastructure
The Z7 is also positioned for areas with older plumbing infrastructure where rust, sediment and particulate material may be a consideration.
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MULTI-STAGE FILTRATION
More Than a Basic Sediment Cartridge
The Puretec Z7-R is part of the PureMix Z7's multi-stage filtration process rather than being a simple sediment-only filter.
The filtration system is designed to reduce sediment, dirt, rust, chlorine, unwanted taste and odour, while the approximately 1 micron nominal filtration rating also provides significant reduction of specified cysts including Giardia and Cryptosporidium.
Puretec's current Z7 filtration technology also incorporates Z Plus technology to inhibit bacterial growth within the system and anti-scaling protection to help reduce mineral buildup.
FILTRATION STAGES
How Does the PureMix Z7 Filtration Process Work?
Stage 1 – Particle Filtration
The system targets particulate material including sediment, rust, sand, silt and algae and helps clarify the incoming water.
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Stage 2 – Carbon Treatment
The carbon treatment stage reduces chlorine and other targeted chemicals while reducing unwanted taste and odour.
Stage 3 – Fine Filtration
Approximately 1 micron nominal filtration provides significant reduction of fine particulate material and specified cysts.
Z Plus Technology
Puretec states that Z Plus technology inhibits bacterial growth within the filtration system.
Anti-Scaling Protection
The Z7 filtration design incorporates anti-scaling protection intended to help reduce mineral buildup.
Final Delivery
The treated water continues through the existing PureMix Z7 installation to the connected kitchen mixer.
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SPECIFICATIONS
PureMix Z7 & Z7-R Specifications
| Specification |
Puretec PureMix Z7 / Z7-R |
| Replacement Cartridge |
Z7-R |
| System Model |
PUREMIX-Z7-LF |
| Nominal Micron Rating |
Approximately 1 micron |
| Listed Flow Rate |
9.5 L/min at 420 kPa |
| Operating Pressure |
200–520 kPa |
| Operating Temperature |
0–38°C |
| Connection |
½" BSP / 15 mm on the PureMix Z7 system |
| Cartridge Size |
15" |
| Current Listed System Capacity |
Up to 63,500 litres, subject to stated test conditions |
| Supply Applications |
Mains, rain, harsh and rural water |
Puretec states that the capacity figure is based on specified inlet chlorine test conditions. Actual cartridge life varies with water quality, sediment loading, usage and operating conditions.
FLOW PERFORMANCE
9.5 L/min Listed Flow Rate
The PureMix Z7 is listed at 9.5 litres per minute at 420 kPa.
Actual flow at the tap depends on incoming water pressure, plumbing configuration, filter condition and the restrictions within the complete installation.
As the cartridge collects sediment and other material over time, a noticeable change in water flow can be one sign that servicing is due.
WATER PRESSURE
Suitable Operating Pressure for the PureMix Z7
Puretec lists the PureMix Z7 operating pressure range at 200–520 kPa.
The Z7-R product is specifically positioned by Puretec for lower-pressure and higher-sediment applications within the operating requirements of the complete system.
System pressure still needs to remain within specification.
A filtration cartridge cannot correct an unsuitable water supply. If the installation is outside the PureMix Z7 operating pressure requirements, the plumbing arrangement should be assessed before relying on cartridge replacement to correct a flow problem.
QUICK-TWIST REPLACEMENT
How Is the Z7-R Cartridge Changed?
Puretec uses a quick-change cartridge connection on the PureMix Z7.
The manufacturer's cartridge replacement procedure uses a simple quarter-turn removal and installation process.
- Isolate the water supply as required
- Release water pressure through the tap
- Rotate the existing cartridge counter-clockwise approximately ¼ turn
- Remove the used cartridge
- Remove packaging from the new Z7-R
- Insert the replacement cartridge into the filter head
- Rotate clockwise approximately ¼ turn
- Align the cartridge and filter-head markings
- Restore the water supply
- Check the system for leaks
- Flush the replacement cartridge before normal use
WHEN TO REPLACE
How Often Should the Puretec Z7-R Be Replaced?
Puretec's guidance for its under-sink replacement cartridges generally places cartridge service life at approximately 6–12 months, depending on water quality and usage.
The Z7 cartridge is specifically used in applications where sediment and incoming water conditions can vary significantly, so a fixed calendar interval should not be the only consideration.
- Recommended cartridge service interval has been reached
- Applicable rated water capacity has been reached
- Water flow has noticeably reduced
- Water taste or odour has changed
- System has experienced unusually high sediment loading
- Cartridge replacement history is unknown
WHY SERVICE LIFE VARIES
What Affects Z7-R Cartridge Life?
Sediment Loading
Higher levels of dirt, rust and suspended particles can load the filtration media more quickly.
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Water Consumption
A household using more filtered water will move through the cartridge's available treatment capacity faster.
Incoming Water Chemistry
Chlorine concentration and other incoming water characteristics can influence practical cartridge service life.
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CYST FILTRATION
What Does the 1 Micron Rating Mean?
Puretec lists the PureMix Z7 with an approximately 1 micron nominal filtration rating.
The manufacturer identifies significant reduction of specified cysts including Giardia and Cryptosporidium as part of the Z7 filtration performance.
This is not a substitute for appropriate disinfection.
Puretec states that the product may not be suitable where there are concerns about bacteria such as E. coli and advises against using the system with microbiologically unsafe water or water of unknown quality without adequate disinfection before or after the filtration system.
Z PLUS TECHNOLOGY
What Is Z Plus Technology?
Puretec describes the current PureMix Z7 cartridge as incorporating Z Plus Technology.
The technology is designed to inhibit bacterial growth within the filtration system. This should not be interpreted as making untreated microbiologically unsafe water safe to drink.
The Z7 should still be selected and used according to the quality of the incoming water supply and Puretec's installation and use requirements.
ANTI-SCALING
Built-In Anti-Scaling Protection
The PureMix Z7 filtration technology incorporates anti-scaling protection intended to help limit mineral buildup within the applicable filtration application.
This is one component of the Z7's multi-stage treatment process and does not mean the cartridge is a conventional water softener or that it removes all dissolved hardness minerals from the water.
Z7-R VS STANDARD FILTERS
Why Choose the Z7-R for a PureMix Z7?
| Feature |
Basic Sediment Cartridge |
Puretec Z7-R |
| Primary Function |
Particulate filtration |
Multi-stage treatment |
| Sediment Reduction |
Yes, depending on model |
Yes |
| Chlorine Reduction |
Not normally |
Yes |
| Taste & Odour Treatment |
Not normally |
Yes |
| Nominal Filtration |
Varies |
Approximately 1 micron |
| Z Plus Technology |
No |
Yes |
| Anti-Scaling Protection |
Not normally |
Included in Z7 technology |
| PureMix Z7 Compatibility |
Not guaranteed |
Manufacturer-specified cartridge |
PROFESSIONAL REPLACEMENT
Want Your Z7-R Cartridge Professionally Replaced?
Professional cartridge replacement may be available in eligible Installed Today service areas.
A cartridge replacement service can include removal of the existing Z7-R, installation of the new cartridge, checking accessible connections and confirming the system is not leaking after the water supply is restored.
Repairs to damaged filter heads, isolation valves, pipework, taps or other plumbing components are separate where required.
COMMON QUESTIONS
Questions About the Puretec Z7-R
What System Does the Z7-R Suit?
The Z7-R is the genuine replacement cartridge specified by Puretec for the PureMix Z7 under-sink filtration system.
Is the Z7-R Designed for Rainwater?
Puretec specifically lists mains, rain, harsh and rural water among the intended supply applications for the PureMix Z7.
Is It Suitable for High-Sediment Water?
Yes. Puretec positions the Z7-R for applications with higher sediment levels and harsher water quality.
What Is the Filtration Rating?
The PureMix Z7 has an approximately 1 micron nominal filtration rating.
What Is the Flow Rate?
Puretec lists the PureMix Z7 at 9.5 L/min at 420 kPa.
What Pressure Range Does the System Use?
The current PureMix Z7 specification lists an operating pressure range of 200–520 kPa.
Does the Z7 Reduce Chlorine?
Yes. Chlorine reduction is one of the treatment functions listed by Puretec for the Z7 filtration system.
Does It Reduce Taste and Odour?
Yes. The carbon treatment stage is designed to reduce unwanted taste and odour.
Does It Filter Sediment and Rust?
Yes. Puretec identifies sediment, dirt, rust and other particulate material among the substances targeted by the Z7.
Does the Z7-R Provide Cyst Reduction?
Puretec identifies significant reduction of specified cysts including Giardia and Cryptosporidium as part of the Z7's approximately 1 micron filtration performance.
Does It Remove Bacteria?
The Z Plus technology is designed to inhibit bacterial growth within the filtration system. Puretec specifically warns that the system may not be suitable where bacteria such as E. coli are a concern and that microbiologically unsafe water requires appropriate treatment.
Does the Cartridge Help With Scale?
The PureMix Z7 incorporates anti-scaling protection designed to help limit mineral buildup. It is not a conventional water softener.
How Often Should the Cartridge Be Replaced?
Puretec provides a general under-sink cartridge guide of approximately 6–12 months, with actual replacement frequency dependent on water quality, usage and filtration performance.
Is the Z7-R Easy to Change?
The cartridge uses Puretec's quick-twist connection. The replacement procedure involves approximately a quarter turn to remove the old cartridge and a quarter turn to lock the new cartridge into the filter head.
Will the Z7-R Fit Other Puretec Systems?
Do not assume compatibility. The Z7-R is specified for the PureMix Z7, while other Puretec filtration systems use different Z Series cartridges.
Can Installed Today Replace the Cartridge?
Professional cartridge replacement may be available in eligible service areas where the existing PureMix Z7 system is accessible and in serviceable condition.
WHY INSTALLED TODAY
Order Your Puretec Z7-R Your Way
Supply Only
Order the genuine Puretec Z7-R where you already have a PureMix Z7 installed and plan to arrange the cartridge change yourself.
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Manufacturer-Specified Replacement
The Z7-R is the cartridge Puretec specifies for maintaining the filtration performance of the PureMix Z7 system.
Professional Service Option
Professional cartridge replacement may be available in eligible service areas if you would prefer the filter changed and the installation checked at the same time.
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FINAL CHECK
Is the Puretec Z7-R the Right Replacement Cartridge?
The Puretec Z7-R is the genuine replacement cartridge for the PureMix Z7, a filtration system designed for mains, rain, harsh and rural water supplies and applications with higher sediment levels.
The Z7 system combines approximately 1 micron nominal filtration, sediment and rust reduction, chlorine and taste-and-odour treatment, Z Plus technology and anti-scaling protection, with a listed flow rate of 9.5 L/min at 420 kPa.
Before ordering, confirm that your existing system is a PureMix Z7. Replace the cartridge according to Puretec's applicable service requirements, flush the new cartridge after installation and check the filter and plumbing connections for leaks before returning the system to normal use.
