Jiangsu Angkua Environmental Protection Technology Co., Ltd. manufactures the Composite Filter Element range used in whole-house water purification — the AP810 and AP817 families in 10-inch and 20-inch formats. Each element combines a large-groove outer geometry with multi-layered composite media, so one cartridge handles coarse sediment interception, residual chlorine reduction and fine particulate capture inside a single housing instead of a stacked cartridge train. We produce these elements at our Nantong, Jiangsu site for distributors, appliance brands, water treatment assemblers and private-label programmes, supplying both catalogue models and OEM/ODM configurations.
At a glance: AP810 / AP810-2 big fat groove elements in 10" and 20"; AP817 / AP817-2 composite elements in 10" and 20"; multi-layer filtration in a single cartridge; NSF/FDA, DIN8077, DIN8078, ISO15874 and GB/T18742 referenced in our compliance documentation.
What We Manufacture in This Category
Our composite filter element line is built around the whole-house water purifier format: a pleated, large-groove cartridge that sits in a standard 10-inch or 20-inch sump and protects every draw-off point downstream. The media stack is bonded into the end caps and sealed against the housing so unfiltered water cannot bypass the filtration layer. Because the element is the wear part of the system, our engineering effort concentrates on surface area, dirt-holding capacity and seal integrity under line pressure.
- Groove geometry: deep, wide grooves raise the effective filtration area inside a fixed housing diameter.
- Layered media: progressively denser layers intercept larger particles on the outside and finer particulate towards the core.
- Housing compatibility: elements are dimensioned to the sump, groove profile and end-cap interface agreed for the project.
- Service life: dirt is stored through the media depth rather than blinding the surface, which extends the interval between change-outs.
Our AP Composite Filter Element Range
| Model |
Format and design focus |
Typical installation |
Configuration notes |
| AP810 |
10" big fat groove, high filtration area |
Whole-house point-of-entry in compact sumps |
Groove profile, end caps and O-ring sized to the housing |
| AP810-2 |
20" big fat groove, higher flow per element |
Whole-house supply feeding multiple outlets |
Extended length for larger sumps and longer service intervals |
| AP817 |
10" composite element, efficiency with long life |
Household and light commercial purification stages |
Media layering and micron rating matched to inlet water |
| AP817-2 |
20" composite element for larger systems |
Whole-house systems and pre-R.O. protection |
OEM print, private label and custom packaging available |
The same composite platform also feeds our wider filtration programme, where elements are specified as the consumable stage inside a water purification system or supplied alongside refrigerator water filters for partners who distribute several filter families from one source. The AP817 10" element is a representative model from the range: AP817 10" Composite Whole House Water Purifier Filter.
Filtration Behaviour and Critical Specifications
A composite element is only as good as the balance it strikes between retention and pressure drop. Narrow the media too far and the pump or mains pressure has to work against a rising differential; open it too far and fine particulate reaches the downstream membrane or appliance. We set the working point from the actual inlet water, the required flow at peak draw-off and the change-out interval the system design allows.
Retention
Nominal micron rating selected against the target contaminant load and the sensitivity of downstream equipment.
Flow and pressure drop
Groove depth and pleat count are set so the element holds flow without excessive differential at start-up or at end of life.
Mechanical fit
Outer diameter, length, groove pitch and end-cap geometry follow the housing or the drawing supplied with the enquiry.
- Media layering sequence and the number of functional layers.
- Sealing compound and O-ring elastomer matched to the treated water.
- End-cap style and the interface that locks the element into the sump.
- Rated service volume and the change-out interval agreed with the system designer.
Quality Control and Acceptance
Production runs are checked before packaging: groove geometry and overall dimensions against the approved drawing, media bonding and end-cap integrity, and seal seating verified under line pressure. Media traceability is kept from raw material intake through to the finished carton, so a batch can be traced back to its incoming material lot. Our water purification equipment is certified to international standards including NSF/FDA, DIN8077 and DIN8078, and complies with ISO15874 and GB/T18742, with ISO9001 and ISO14001 management systems governing the plant.
OEM/ODM Configuration and Private Label Support
Standard models cover most whole-house projects, but appliance brands and system assemblers frequently need a cartridge that fits an existing sump, prints their own branding or matches an existing performance claim. Our technical team works from housings, sample elements or dimensional drawings and turns them into a production specification. Low-volume custom runs and high-volume standard runs follow the same dimensional and structural controls.
- Custom dimensions: outer diameter, length and groove pattern outside the catalogue formats.
- Media tuning: layer sequence and density gradient adjusted to the inlet water profile.
- Sealing options: elastomer and gasket selection for the housing interface.
- Branding: private-label printing, retail cartons and instruction sheets.
- Packaging scope: bulk cartons, retail-ready packs or mixed pallets per the delivery agreement.
Information We Use to Configure Your Solution
| Project input |
What we confirm in return |
| Installation point and system layout |
Element format, housing interface and the stage at which the composite cartridge sits |
| Inlet water source and quality data |
Media layering, micron rating and expected dirt-holding capacity |
| Required flow and available line pressure |
Groove geometry and pleat area that keep differential pressure within the design allowance |
| Housing drawing, sample or existing cartridge |
Matched outer diameter, length, end caps, groove pitch and sealing |
| Branding, packaging and order volume |
Print artwork, carton specification, batch plan and OEM/ODM programme terms |
Installation, Maintenance and Documentation
Composite elements are installed in the sump with the seal seated squarely, then flushed briefly before the downstream line is reopened. Change-out is a manual operation on most housings, so the element is designed to release from the cap without damaging the media or leaving fragments in the bowl. We supply technical data sheets, fitting and replacement instructions, and carton labelling that carries the model, batch and change-out guidance, so distributors and service teams work from one consistent document set.
Frequently Asked Questions
What is the difference between the AP810 and AP817 families?
AP810 elements use the big fat groove construction, where the dominant design goal is filtration area and high dirt-holding capacity inside a given housing diameter. AP817 elements are composite cartridges in the same 10-inch and 20-inch formats, specified where efficiency and long service life are balanced for a defined inlet water quality. Both are offered in 10-inch and 20-inch lengths.
Can you match a cartridge to a housing we already use?
Yes. Send the housing drawing, a sample element or the dimensions you need and we will define the outer diameter, length, groove pitch, end caps and sealing to suit. Where the housing is a standard sump, we simply confirm which of our existing formats fits without modification.
Do you supply private-label composite elements?
We run OEM/ODM programmes covering media tuning, custom dimensions, elastomer selection, printed branding and retail or bulk packaging. A specification is fixed from the sample or drawing stage, then held consistent across subsequent production batches.
Which standards apply to your filtration products?
Our water purification equipment is certified to international standards including NSF/FDA, DIN8077 and DIN8078, and complies with ISO15874 and GB/T18742. Production is governed by ISO9001 quality and ISO14001 environmental management systems.
How is the correct micron rating chosen for a whole-house system?
It follows the inlet water and what the element has to protect. Sediment-heavy mains water usually justifies a coarser outer layer with a finer inner layer, while systems feeding a membrane need a tighter rating at the surface. We set the rating from your water data and the flow the line must hold at peak draw-off.
What does a quotation need to include?
The installation point, inlet water quality, required flow, housing interface, branding and packaging requirements, and the volume per batch. With those inputs we return a configuration proposal covering model selection, media and sealing choices, dimensional confirmation, documentation and the delivery scope.
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