Vontron SW4040HR Industrial RO Membrane

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The Vontron SW4040HR RO Membrane is a high‑performance, industrial‑grade reverse osmosis element designed for demanding environments such as seawater or high‑salinity brackish water feed. It features a spiral‑wound configuration with a large active area of ~8.8 m² (~95 ft²) and a typical permeate output of 1,600 GPD (~6.1 m³/day) under test conditions.
Because it achieves a salt rejection rate of 99.8%, it offers outstanding purification for high TDS inputs.
The SW4040HR is built with robust materials and rated for high pressures (up to ~8.3 MPa / ≈1,200 psi) for demanding desalination tasks.

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Key Features

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• High salt rejection (~99.8%) — suitable for seawater or high‑brine feed.

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• Large active area (~8.8 m²) inside a standard 4″×40″ housing — supports higher throughput.

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• Robust pressure rating — max allowed pressure up to ~1,200 psi (8.28 MPa), which allows industrial use.

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• Wide pH and chemical tolerance — operational pH range 2‑11, cleaning range 1‑13.

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• Seawater‑qualified design — excellent for systems treating saline or high‑TDS water.

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Technical Specifications

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• Model: SW4040HR

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• Active Membrane Area: ~95 ft² (≈8.8 m²)

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• Typical Permeate Flow: ~1,600 GPD (~6.1 m³/day) under standard test condition (32,000 mg/L NaCl, recovery 8%)

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• Stable Rejection Rate: 99.8% (under test)

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• Maximum Operating Pressure: ~1,200 psi (~8.28 MPa)

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• Maximum Feed Flow: ~3.6 m³/h (~16 gpm)

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• Maximum Feed Temperature: ~45 °C

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• Required Feed Conditions: SDI ≤5, free chlorine <0.1 ppm

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Why Choose the Vontron SW4040HR RO Membrane?

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For industrial or commercial applications that demand serious water purification, the Vontron SW4040HR is an excellent choice. Because it handles high salinity, offers high rejection and high flow in a standard 4″×40″ format, you avoid oversized vessels or custom arrangements. Moreover, thanks to its robust design and high-pressure rating, it performs reliably in harsh feed conditions. Additionally, when pre‑treatment is properly maintained, this membrane delivers consistent, high-quality permeate and longer service life — ideal for desalination systems, high‑TDS feed water, and industrial water reuse settings.

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Installation & Maintenance Tips

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1. Ensure solid pre‑treatment: feed water SDI ≤5, free chlorine <0.1 ppm, temperature ≤45 °C.

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2. On first use, flush the new element at low pressure (~15‑25 min), then at full design pressure for ~60‑90 min before regular operation. Inzton

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3. Monitor performance: if permeate flow or salt rejection drops, inspect for fouling, scaling or membrane damage.

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4. Follow periodic chemical cleaning according to feed‑water chemistry; ensure pH stays within allowable cleaning range (1‑13).

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5. For storage or standby, maintain the element wet in a protective solution (e.g., 1 % sodium bisulfite) to prevent microbial growth.

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