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4040 RO Membrane | 4”×40” Reverse Osmosis Element (TFC) | STARK
4040 RO Membrane | 4”×40” Reverse Osmosis Element (TFC) | STARK - Afbeelding 2
4040 RO Membrane | 4”×40” Reverse Osmosis Element (TFC) | STARK - Afbeelding 3
4040 RO Membrane | 4”×40” Reverse Osmosis Element (TFC) | STARK - Afbeelding 4
4040 RO Membrane | 4”×40” Reverse Osmosis Element (TFC) | STARK - Afbeelding 5
4040 RO Membrane | 4”×40” Reverse Osmosis Element (TFC) | STARK - Afbeelding 6
4040 RO Membrane | 4”×40” Reverse Osmosis Element (TFC) | STARK - Afbeelding 7

4040 RO Membrane | 4”×40” Reverse Osmosis Element (TFC) | STARK

4040 Reverse Osmosis (RO) Membrane Element — thin-film composite (TFC) polyamide, 4” × 40” size, compatible with standard 4040 pressure vessels. Designed for brackish water, low-energy and fouling-resistant duties in commercial and light-industrial RO systems. Typical nominal salt rejection ≥ 99% with permeate flows in the 2,000–2,800 GPD range under standard test conditions.

Note: Final performance depends on feed quality, temperature and operating pressure. We engineer the element selection to your water analysis and pretreatment.

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Product Beschrijving

The STARK 4040 RO membrane uses a high-selectivity TFC polyamide layer to reject dissolved salts, silica and organics. It fits any standard 4040 housing, making it an easy retrofit for most commercial RO skids. Options include brackish-water high rejection, low-energy (LE) for reduced operating pressure, and fouling-resistant (FR) designs for challenging feeds.

  • Stable permeate quality: nominal rejection ≥ 99% on NaCl at 25 °C; smooth surface polyamide for consistent performance.
  • Energy flexibility: standard BW elements run ~150–225 psi; LE options target lower pressure at similar flux.
  • Serviceability: fits common 4040 vessels; EPDM brine seal; standard 3/4” interconnector ID.
  • Designed for pretreatment trains: pair with 20 µm → 5 µm cartridges, carbon/anti-scalant, and UF/clarification as needed to control SDI and biofouling.

Engineering transparency: All ratings are typical and configurable. Guarantees are confirmed against your feed analysis (TDS/SDI, temperature, chlorine, scaling indices) and the selected operating window.

Product Parameter

Technical Parameters (typical values; model-dependent)

Membrane Type Thin-Film Composite (TFC) Polyamide
Element Size 4.0″ × 40″ (4040), OD ~3.9″, ID 0.75″
Active Area ~7.5–8.5 m² (80–90 ft²), depending on model
Nominal Salt Rejection ≥ 99.0% (BW); ≥ 99.2–99.5% for high-rejection variants
Typical Permeate Flow ~2,000–2,800 GPD (7.6–10.6 m³/d) at 25 °C, 2,000 ppm NaCl, pH 7, 15% recovery
Bedrijfsdruk ~1.0–1.6 MPa (150–225 psi) BW/LE; max 4.1 MPa (600 psi) per model limit
Feed Water Temperature 5–45 °C (flux rises with temperature)
pH Range (continuous / cleaning) 2–11 / 1–13
Free Chlorine Tolerance 0 mg/L (TFC polyamide is chlorine-sensitive; dechlorinate upstream)
Max Feed SDI < 5 recommended; lower for sensitive duties
Max Pressure Drop (per element) ≤ 1.0 bar (15 psi)
Recommended Recovery 10–20% per pressure vessel (system design-dependent)
End Connection Standard 4040 brine seal and interconnector; EPDM O-rings
Available Variants BW4040 (high rejection), LE4040 (low energy), FR4040 (fouling-resistant), SW4040 (seawater / higher pressure)
Test Conditions Note Unless stated otherwise: 2,000 ppm NaCl, 25 °C, pH 7, 15% recovery; your results vary with temperature and pressure.

Toepasselijke industrie

  • Commercial & light-industrial RO systems for municipal/brackish feeds
  • Beverage & bottled water polishing
  • Boiler make-up & process water
  • Electronics pre-DI / polishing trains
  • Wastewater reuse after clarification/UF
  • Carwash, HVAC, humidification and rinsing lines

Voordeel één

Advantage 1 — High Rejection with Flexible Energy Window

  • Nominal ≥ 99% salt rejection on NaCl with stable permeate conductivity.
  • Low-energy (LE) options to reduce pump pressure and operating cost.
  • Fouling-resistant (FR) construction available for difficult feeds.

Voordeel TWEE

Advantage 2 — Easy Retrofit & OEM Support

  • Compatible with standard 4040 pressure vessels and adapters.
  • OEM/Private label available; documentation and QC traceability provided.
  • Application engineering: element selection, pretreatment and dosing guidance based on your water analysis.

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FAQ

De levensduur van een omgekeerd osmose systeem hangt af van de waterkwaliteit en het onderhoud. Het membraan gaat meestal 2-3 jaar mee, terwijl het systeem zelf meer dan 10 jaar kan meegaan als het goed onderhouden wordt.

Ja, al onze systemen zijn volledig aanpasbaar. We analyseren uw waterrapport en toepassingsbehoeften voordat we oplossingen op maat bieden.

Onze producten voldoen aan CE, ISO 9001 en kunnen op verzoek worden ontworpen om te voldoen aan specifieke regionale voorschriften of industrienormen.

Standaardsystemen worden binnen 7-15 dagen verzonden. Voor aangepaste bestellingen kan de levertijd oplopen tot 20-25 dagen, afhankelijk van de complexiteit.

Ja. We bieden volledige technische documentatie, begeleiding op afstand via video en kunnen op verzoek technici internationaal sturen.

Onze offerte omvat het volledige RO-systeem, het bedieningspaneel, de pompen, de voorbehandelingsunits en alle benodigde appendages. Installatiegereedschap en reserveonderdelen kunnen op verzoek worden meegeleverd.

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