Structure preview — product data, certifications and cross-reference mappings are pending client input.

RO Membranes & Components

Choose by type first — brackish water, ultra-low pressure, low pressure or seawater — then filter and label by 4040 / 8040. Membrane housings and components belong to this block as well.

BWRO · ULP · LP · SWRO4040 / 8040Housings & componentsDatasheet per model

Not sure which type fits? Send the water analysis and the element you run today.Request a Quote

Browse by type

Four types cover four water chemistries and energy targets. Actual models and specifications appear at the model level, once client data is loaded.

BWRO — Brackish Water RO Membranes

For brackish water and industrial process water where salt rejection matters most

Brackish water elements are the workhorse of industrial RO: municipal and process water with elevated TDS where a stable rejection rate matters more than the lowest possible pressure.

Industry reference: about 225–255 psi operating pressure — industry reference only, not a SURMEM specification.

40408040

ULP — Ultra-Low Pressure RO Membranes

Same rejection with the lowest energy demand — municipal and low-pressure systems

Ultra-low pressure elements are chosen when energy cost dominates: they run at low feed pressure and are widely used for municipal water and low-pressure applications.

Industry reference: about 110 psi operating pressure — industry reference only, not a SURMEM specification.

40408040

LP — Low Pressure RO Membranes

Low pressure without giving up flux — commercial and light industrial duty

Low pressure elements sit between ULP and brackish water: lower energy demand than standard brackish elements, with flux that holds up in continuous duty.

Industry reference: about 150 psi operating pressure — industry reference only, not a SURMEM specification.

40408040

SWRO — Seawater RO Membranes

Built for high-salinity seawater, typically 35,000–45,000 ppm TDS

Seawater elements work at high pressure and are engineered for the most demanding desalination duty, where fouling resistance and durability drive the choice.

Industry reference: about 800 psi operating pressure — industry reference only, not a SURMEM specification.

40408040

What the specification table has to carry

These ten fields are the industry standard for RO pages — leave one out and the buyer has to ask. Values are filled in once the client supplies them; anything missing stays marked pending instead of being invented.

Model	Written as type-size, e.g. BW-4040.
Membrane type	BWRO / ULP / LP / SWRO.
Size	4040 / 8040 — the filter above the table.
Active area (ft² / m²)	Determines how much permeate one element can produce.
Average permeate flow (GPD / m³/d)	Quoted at the test conditions below.
Salt rejection (%)	Meaningless without the test conditions.
Recovery (%)	Drives system design and staging.
Operating pressure	The pressure the element is rated to run at.
Maximum pressure	Ceiling for the element.
Test conditions	Feed TDS, pressure and temperature used for the numbers above.
Model data	Awaiting client data

Membrane housings & components

“Components” in this block means membrane housings (pressure vessels) and their fittings — not the generic accessories of the cartridge block.

Fits element	4040 / 8040 — decides fit.
Elements per vessel	1, 2 or multi-element.
Material	FRP / SS304 / SS316L.
Pressure rating	300 / 450 / 600 / 1000 psi and so on.
End style	End port or side port.

How to choose

1. Send us the water analysis

Feed TDS, temperature, required permeate flow and target recovery. Brackish and seawater are two different selections.

2. Confirm the size

4040 or 8040 depends on the vessels and the duty; for replacements just send the part you run today.

3. Get the quote and datasheet

Pricing, MOQ and lead time are quoted per model. Datasheet and test conditions come with the quote.

Send us the duty and the size

Tell us feed TDS, permeate flow required and the vessel size you run. We reply per model with pricing, lead time and test conditions.