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TecFlo LP21-4040 4" Commercial Reverse Osmosis Membrane Element

The TecFlo LP21-4040 is a high-performance commercial reverse osmosis membrane element engineered as a direct equivalent to standard Vontron LP21-4040 elements. Designed for treating high-TDS feed waters in commercial and industrial settings, it operates at a nominal pressure of 15 atm (approx. 15.2 bar / 220 psi) to deliver clean, demineralized drinking and process water. Built with a polyamide thin-film composite chemistry and an active filtration area of 7.9 m2 (85 sq ft), it is suited for standard 4-inch membrane housings across point-of-use pure water dispensing kiosks, municipal water purification stations, self-service car washes, and residential well water treatment installations.

177.69 € 177.69 € (Tax included)
177.69 € (Tax included)

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Internal Reference: 1120020001
Barcode: 1872025004924

Offering an output of 9.1 m3/day (approx. 2,400 GPD / ~380 L/h) alongside a stabilized salt rejection of 99.5%, the TecFlo LP21-4040 separates dissolved salts, silica, heavy metals, and trace organics. Its construction incorporates a fiberglass outer wrap, molded industrial end caps, and standard connector stubs to ensure dimensional rigidity under continuous pressure. The element withstands periodic chemical clean-in-place (CIP) washes to restore flux and water quality after extended runs, providing a balance of performance and operational economy.

Technical information

Here are most important things about this product

  • High Demineralization Rejection: Delivers up to 99.5% stabilized salt rejection, purifying high-TDS feed water to produce low-conductivity permeate.
  • Stable Daily Productivity: Generates 9.1 m3/day (approx. 380 L/h) of purified water to support commercial filtration loops.
  • Direct Drop-In Equivalent: Serves as a full replacement alternative for standard Vontron LP21-4040 elements in universal 4040 membrane vessels.
  • Chemical Cleaning Resilience: Tolerates regular acid and alkaline CIP wash cycles to reverse mineral scaling and restore throughput.
  • Durable Fiberglass Outer Shell: Heavy-duty outer fiberglass casing and precision end caps prevent bypass and ensure structural integrity under operational pressure.
  • Standard 4040 Form Factor: Features universal 4-inch diameter by 40-inch length dimensions for straightforward installation across single- and multi-element arrays.
  • Product Type: Commercial Reverse Osmosis Membrane Element
  • Brand / Model: TecFlo / LP21-4040
  • Equivalent Model: Vontron LP21-4040
  • Membrane Chemistry: Polyamide Thin-Film Composite (TFC), Spiral-Wound
  • Active Membrane Surface Area: 7.9 m2 (85 sq ft)
  • Nominal Permeate Flow Rate: 9.1 m3/day (2,400 GPD / approx. 380 L/h)
  • Stabilized Salt Rejection: 99.5%
  • Nominal Working Pressure: 15 atm (approx. 15.2 bar / 220 psi)
  • Packaging State: Wet-type, factory vacuum-sealed with food-grade preservative solution
  • Total Length: 40 inches (1,016 mm)
  • Outer Diameter: 4 inches (approx. 99 mm)
  • Primary Vessel Compatibility: Universal 4" x 40" commercial reverse osmosis pressure vessels
  • Pure water automated vending kiosks and municipal water distribution stations
  • Pre-treatment and demineralization of high-TDS borehole and well water supplies
  • Self-service and touchless spot-free vehicle car washes
  • Commercial boiler feed and cooling tower makeup loops
  • Food and beverage manufacturing, bakeries, and commercial kitchens
  • Light industrial process loops requiring high salt rejection

Please note: Wear appropriate protective gloves and personal safety gear when handling and installing membrane elements. Protect membranes from freezing, desiccation, and storage temperatures exceeding +35 deg C. During initial system startup, run the system and discard all permeate produced during the first 20 minutes directly to the drain to flush storage preservatives completely. Once wetted, keep the element continuously moist and ensure zero backpressure builds up on the permeate line. Use only chemical reagents and antiscalants verified as compatible with polyamide composite membranes.