Vontron is one of the Chinese RO membrane manufacturers, with a product line organised by application: ULP ultra-low pressure, LP low pressure, FR fouling resistant, SW seawater desalination and PURO fouling resistant (Helixfil series). Numerals in the suffix such as 22/32 relate to membrane area and rejection grade, while -8040 is the format size.
In domestic substitution projects, Vontron models correspond to imported brands to a degree (ULP, for instance, matches the ESPA/LE class), but a correspondence indicates similar positioning only, not equivalent parameters. When replacing an element, check area, rejection and pressure drop item by item.
Series breakdown
| Series | Positioning | Representative models | Typical application |
|---|---|---|---|
| ULP | Ultra-low pressure | ULP22-8040, ULP32-8040, ULP440-MAX | Desalination of surface water and groundwater |
| LP | Low pressure | LP22-8040, LP22-8040-440, LP440-MAX | Brackish water desalination |
| FR | Fouling resistant | FR12-8040, FR22-8040PRO | Complex feed water conditions |
| SW | Seawater desalination | SW8040HR-400, SW8040LE-440, SW8040XLE-400 | Seawater desalination |
| PURO | Fouling resistant (Helixfil) | PURO-I, PURO-II, PURO-FRLE | Complex feed water below 10,000 ppm TDS |
The “Positioning” and “Typical application” columns reproduce the series descriptions on the vendor's product pages (en.vontron.com/Product/30.html and the individual series pages). No assessment of price, lead time or relative performance has been added here.
Representative models and parameters
The table below lists representative models of this brand in 8040 format from the library (membrane area 365–510 ft² per element), sorted by area from largest to smallest; this format has 26 elements in total. The full model list can be filtered by brand in the design tool.
| Model | Membrane area ft² | Stabilised salt rejection | Category |
|---|---|---|---|
| LP22-8040-440 | 440 | 99.7% | Brackish water RO |
| LP440-MAX | 440 | 99.7% | Brackish water RO |
| SW8040HR-440 | 440 | 99.8% | Seawater desalination |
| SW8040LE-440 | 440 | 99.8% | Seawater desalination |
| SW8040XLE-440 | 440 | 99.7% | Seawater desalination |
| ULP32-8040-440 | 440 | 99.3% | Brackish water RO |
| ULP440-MAX | 440 | 99.5% | Brackish water RO |
| FR12-8040 | 400 | 99.5% | Brackish water RO |
| FR22-8040PRO | 400 | 99.7% | Brackish water RO |
| HOR22-8040 | 400 | 99.5% | Brackish water RO |
| LP22-8040 | 400 | 99.7% | Brackish water RO |
| LP22-8040/31 | 400 | 99.7% | Brackish water RO |
| LP22-8040PRO | 400 | 99.7% | Brackish water RO |
| LP400-LD | 400 | 99.7% | Brackish water RO |
| PURO-FRLE | 400 | 99.6% | Brackish water RO |
| PURO-I | 400 | 99.8% | Brackish water RO |
| PURO-II | 400 | 99.8% | Brackish water RO |
| SW8040HR-400 | 400 | 99.8% | Seawater desalination |
How to select
- Surface water and groundwater desalination: ULP series, e.g. ULP32-8040 (400 ft², 99.5% stabilised rejection).
- Brackish water desalination: LP series, e.g. LP22-8040 (400 ft², 99.7%).
- Complex feed water and fouling-prone duty: FR series (FR22-8040PRO, 400 ft², 99.7%) or PURO series (PURO-II, 400 ft², 99.8%).
- Seawater desalination: SW series, e.g. SW8040HR-400 (400 ft², 99.8%).
The list follows the vendor's series positioning and the parameters in this library; model data should still be taken from the manufacturer's datasheet, and for large-area elements (440 ft²) the actual permeate flow and rejection are worth confirming per batch.
Official contact
| service@vontron.com | |
| Official website | www.vontron.com |
Contact details for Vontron (Vontron Technology) are as published on the company's official website.
FAQ
Is Vontron a domestic membrane brand?
Yes. Vontron is one of the main domestic RO membrane manufacturers, with products covering brackish water, seawater, fouling resistant and nanofiltration.
Can Vontron ULP elements be exchanged with Hydranautics ESPA elements?
Both are positioned as ultra-low pressure and share the same dimensions, so either fits the same pressure vessel, but membrane area, rejection and pressure-drop characteristics differ. After replacement the array and pressures must be recalculated; models cannot be treated as equivalent on the basis of their names.
What is the difference between ULP and LP?
By the vendor positioning, the ULP ultra-low pressure series is for desalination of surface water and groundwater, while the LP low pressure series is for brackish water desalination; both are aromatic polyamide composite membranes, so check operating pressure and rejection against each model datasheet.
Where can Vontron membrane parameters be checked?
This site lists 37 Vontron elements with membrane area and stabilised salt rejection, comparable directly in the table on this page; for formal design, use the manufacturer's latest datasheet.
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Parameters for 733 membrane elements from 8 manufacturers, with same-condition comparison, project import and calculation report export (Excel/PDF/Word).
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