Salt Rejection: Stabilized salt rejection rate of 99.6%, ensuring high-quality permeate water with minimal dissolved salts.
Operating Conditions:
Maximum Operating Temperature: 113°F (45°C)
Maximum Operating Pressure: 600 psig (41 bar)
Maximum Pressure Drop: 15 psig (1.0 bar)
pH Range:
Continuous Operation: 2 – 11
Short-Term Cleaning: 1 – 13
Maximum Feed Flow: 75 GPM (17 m³/hr)
Maximum Feed Silt Density Index (SDI): 5
Free Chlorine Tolerance: < 0.1 ppm
Dimensions: 8″ diameter x 40″ length (approximately 20.3 cm x 101.6 cm)
Outer Shell: Hard fiberglass, enhancing structural integrity and resistance to external stresses.
The FilmTec BW30 PRO-400 Membrane is a high-performance, thin-film composite polyamide membrane specifically engineered for brackish water desalination. With a nominal active area of 400 ft² (approximately 37 m²), it offers a permeate flow rate of 11,000 gallons per day (GPD) or 42 cubic meters per day (m³/day). This capacity makes it suitable for large-scale water treatment systems requiring consistent and high-quality water output.
The FilmTec BW30 PRO-400 membrane is versatile and finds applications across various sectors:
As an authorized distributor and certified installer of DuPont FilmTec membranes, Hallmark offers:
Proper installation is crucial for optimal membrane performance. Hallmark’s certified technicians ensure precise installation of the BW30-PRO-400 Membrane, adhering to industry standards and manufacturer guidelines.
To prolong the lifespan of your BW30-PRO-400 Membrane, regular maintenance is essential. Hallmark offers comprehensive maintenance services, including cleaning, performance monitoring, and troubleshooting.
The FilmTec BW30 PRO-400 membrane represents a significant advancement in brackish water reverse osmosis technology. With its high salt rejection, durability, and energy efficiency, it meets the demanding needs of modern water treatment systems. Investing in this membrane ensures a reliable and sustainable solution for producing high-quality water across various industries.

Hallmark is the leading manufacturer of reverse osmosis desalination systems (RO Plant) and water distribution systems for offshore and land based applications.

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