RO & Seawater Desalination Pre-Filtration
A fouled membrane can cost thousands to replace. Our high flow pre-filter cartridges shield your RO and seawater desalination membranes from silt, colloids and particles — extending membrane life and stabilizing your system output.
✔SWRO Ready ✔1-40 Micron ✔ Free Sample ✔Engineer Support
Tell us your system — our engineers recommend the right micron & media, free.
Silt and colloids that slip past a weak pre-filter clog membranes early — and a replacement stack costs far more than any cartridge.
Seawater and well water swing in turbidity. A pre-filter that can’t handle the load lets particles through when you least expect it.
Pick the wrong rating and you either foul the membrane or restrict flow. Most suppliers just sell you a part and leave the sizing to you.
The difference between a risky “generic” and a true engineered replacement.
✔ High dirt-holding pleated media captures silt and colloids before they reach the membrane.
✔ Stable performance under high flow — media rated up to 110 m³/h won’t collapse or bypass.
✔ Corrosion-resistant materials built for saline SWRO feed water.
✔ Consistent, verified micron ratings so your SDI stays where it should.
✔ Longer membrane life means fewer costly membrane changes per year.
Typical membrane life extension reported by customers who upgrade their pre-filtration.*
*Results vary by feed water & system. Replace with your own verified figure.
A starting point — send us your water report and we’ll confirm the exact spec, free.
| Application | Feed Water | Typical Micron | Suggested Media |
|---|---|---|---|
| RO Pre-Filter | Municipal / low turbidity | 5 μm | PP pleated |
| Brackish RO | Well / medium turbidity | 5–10 μm | PP pleated |
| SWRO (Seawater) | High salinity / variable | 1–5 μm | PP / Glass fiber |
| High-Purity Polish | Pre-treated | 1 μm | PES / PTFE |
Filtration efficiency tested by an accredited institute (TPRI) to standard DL/T 1866-2018 over a 60-minute dynamic run.
Third-party verified over a full 60-minute dynamic test — not a spec-sheet claim.
Just ~5 kPa at rated flow — low energy cost and stable operation for your system.
Full TPRI efficiency & flow report available on request for your QA records.
100%
Verified 100% removal of particles ≥3 µm means far fewer silt and colloidal particles reach the membrane. That helps keep feed SDI low and stable — slowing the fouling that shortens membrane life and drives up cleaning costs.
*Achievable SDI depends on your feed water. Share your water report and our engineers will confirm the target.
How pre-filtration extends membrane life
100% removal ≥3 µm
→ lower, stabler SDI
→ slower fouling
→ fewer CIP cycles
→ longer membrane life
✖ Unverified micron — silt slips through to the membrane
✖ Thin media that channels or collapses under high flow
✖ Not rated for saline SWRO feed water
✖ No sizing help — you carry all the risk
✖ Commit to a full batch before you can test it
✔ Third-party verified 100% removal ≥3 µm (TPRI, DL/T 1866-2018)
✔ Low clean pressure drop (~5 kPa at rated flow)
✔ High dirt-holding pleated media rated for full flow
✔ Accredited test report supplied for your QA records
✔ Free engineer sizing + free sample before you commit
Filters engineered to protect, not just to pass water.
Send your water report, get the right spec back.
QC & material certs with every batch.
Lower cost per cartridge, no brand markup.
1
Application, feed water & flow rate.
2
Our engineers recommend micron & media.
3
Validate performance on your line.
4
Approve and we ship your order.
Yes — independently verified. In third-party testing by TPRI (Xi’an Thermal Power Research Institute) to standard DL/T 1866-2018, our 40″ / 5 µm cartridge removed 100% of particles ≥3 µm and 99.9% of particles ≥2 µm over a full 60-minute dynamic run. The complete report is available on request for your QA records.
The tested 40″ / 5 µm cartridge is rated at 46.7 m³/h at only ~5 kPa clean differential pressure. Across the tested range the relationship is close to linear (ΔP in kPa ≈ 0.113 × flow − 0.272, R² = 0.99), so you can size confidently for low energy consumption. Full flow-vs-ΔP curve available on request.
By removing 100% of particles ≥3 µm, the cartridge substantially reduces the silt and colloidal load reaching the membrane, helping keep feed SDI low and stable. The exact achievable SDI depends on your feed water quality and system design — send us your water report and our engineers will advise on the target.
We offer pleated PP, PES, PTFE and glass fiber media so we can match your chemistry and micron. If your application requires low-extractables / membrane-compatible construction, tell us — we’ll confirm the exact media grade and documentation we can supply for your specific requirement.
Yes. We build to standard high flow dimensions (6″ and 6.5″ OD, 40″ and 60″ lengths) with 222/226 O-ring, bayonet and other standard end connections — a true drop-in replacement for Pall, 3M CUNO and Parker high flow housings. Custom dimensions are available on request.
We offer PP, PES, PTFE and glass fiber media so we can match your chemistry — including saline SWRO feed and a range of pH and oxidant conditions. Tell us your feed water and we’ll recommend the compatible media and micron.
Each batch ships with a QC report and material certification, and a third-party beta-ratio/efficiency test report is available on request for your QA and audit records.
Yes. We provide free samples so you can validate fit and performance on your own system first, and low MOQs so you’re not locked into a large batch to get started.
Send us your application and feed water details. Our engineers will recommend the right pre-filter and send a matching quote and sample — no obligation.
WhatsApp: +86 131 8896 2285 · Email: [email protected]
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