Compliance & Document Hub
- USA FDA Food Additive Status: Complies with the U.S. Food, Drug and Cosmetic Act as amended under Food Additive Regulation 21 CFR § 177.2550 for processing liquid food and purifying water for food manufacturing.
- Material Compliance: Element parts or materials in contact with potable water are compliant to 21 CFR § 170 to 199.
Executive Product Summary
The DuPont FilmTec BW30HR-440 is an advanced high-rejection brackish water reverse osmosis (RO) membrane element meticulously engineered to support large-scale industrial water demineralization and municipal purification systems. Designed using a proprietary polyamide thin-film composite chemistry, this 8-inch industrial component serves as the primary barrier against dissolved solids, delivering consistently high-quality permeate water while minimizing both capital expenditures (CAPEX) and operating expenses (OPEX).
At the core of its performance profile is a massive 440 square-foot (41 square-meter) active surface area, which yields a highly optimized permeate flow rate of 12,650 gallons per day (48 cubic meters per day) under standard test conditions. This high yield translates directly to improved system efficiency and a reduced physical footprint, as fewer elements are required to hit volume targets. Furthermore, the element boasts an exceptional stabilized salt rejection rate of 99.7%, with a guaranteed minimum rejection rate of 99.4%, ensuring stringent water quality targets are effortlessly met.
Operational durability is a central tenet of the BW30HR-440 element design. It integrates a 28-mil feed spacer that strikes an optimal balance between minimizing fouling and maximizing membrane surface area. System operators benefit from the element's extraordinarily robust chemical tolerance, permitting short-term cleaning operations (up to 30 minutes) across an extremely wide pH range of 1 to 13. This allows engineers to deploy aggressive cleaning regimens to restore performance after scaling or organic fouling without permanently degrading the polyamide thin-film composite.
Operating within strict industrial envelopes, the membrane withstands maximum operating pressures of up to 600 psi (41 bar) and maximum feed flows of 75 gpm (17 cubic meters per hour). Maximum continuous operating temperatures are rated at 113°F (45°C), provided pH levels remain at or below 10. The system is designed to tolerate a maximum silt density index (SDI) of 5, but demands stringent pretreatment to maintain free chlorine exposure below 0.1 ppm to prevent irreversible oxidation damage to the membrane matrix.
Constructed with a highly durable fiberglass outer wrap and a specialized U-Cup brine seal, this element ensures secure, leak-free seating inside pressure vessels. It is fully compliant with USA FDA guidelines (21 CFR § 177.2550) for direct use in processing liquid foods and purifying water destined for food and beverage manufacturing, making it a highly versatile procurement option for a broad array of processing sectors.
Applications & Industry Use-Cases
- Industrial Water Demineralization: Utilized heavily in primary industrial water treatment loops to strip dissolved salts from brackish sources. The 99.7% stabilized salt rejection ensures the downstream processes receive ultra-low conductivity water, reducing scaling on critical mechanical infrastructure.
- Boiler Feedwater Pretreatment: Essential for generating high-purity water before entry into steam boilers. By relying on the membrane's 12,650 gpd output capacity and high contaminant rejection, facilities prevent costly scaling inside boiler tubes, maximizing thermal transfer efficiency and drastically reducing boiler blowdown frequency.
- Cooling Tower Make-Up Water: Integrated into cooling tower systems to remove hardness and silica from raw water sources. The reduction of dissolved solids safely allows for higher cycles of concentration, conserving water and reducing the required volume of chemical antiscalant treatments.
- Municipal Water Purification: Deployed in municipal reverse osmosis installations where high daily volume capacities are mandated. The massive 440-square-foot active surface area allows municipal plants to treat large volumes of brackish water with fewer pressure vessels, thereby lowering overall CAPEX.
- Food and Beverage Processing: Fully compliant with FDA 21 CFR § 177.2550 regulations, this specific element is safely sourced by plant managers for purifying water utilized directly in food manufacturing or for concentrating liquid foods without introducing hazardous contaminants.
- Industrial Utility Water Production: Serves as the backbone for general plant utility water production in manufacturing hubs where stable, long-term operational performance under varying pH conditions (continuous operation between pH 2 and 11) is essential to maintaining uptime and limiting total cost of ownership.
Cross-Compatibility & System Integration
The DuPont FilmTec BW30HR-440 is engineered to standard industrial 8-inch element dimensions, featuring a length of 40.0 inches (1,016 mm) and an outer diameter of 7.9 inches (201 mm). This makes it a seamless, drop-in replacement compatible with virtually all commercial 8-inch reverse osmosis pressure vessels on the market. The permeate tube has an inner diameter of 1.125 inches (29 mm) and is designed for straightforward longitudinal connection across multiple elements inside a single vessel array.
To ensure flawless modular integration, DuPont supplies an interconnector assembly with each membrane. Included in the packaging is a coupler (part number 313198), which incorporates two precision-fitted 3-912 EPR O-rings (part number 151705). This ensures a hydraulically secure seal between elements, preventing pressurized raw feedwater from bypassing into the low-pressure permeate line.
When designing or integrating this element into multi-stage pressure vessel arrays, engineers must strictly adhere to the pressure drop limits clearly outlined in the technical data. The maximum pressure drop per individual element must not exceed 15 psi (1.0 bar), and the total pressure drop across a single pressure vessel containing a minimum of four elements must not exceed 50 psi (3.5 bar). Exceeding these thresholds can lead to mechanical telescoping or failure of the fiberglass outer wrap. It is also imperative that permeate-side backpressure is strictly avoided at all times during operation and shutdown sequences.
Frequently Asked Questions
Q: What is the permeate flow rate of the FilmTec BW30HR-440?
The membrane delivers a high permeate flow rate of 12,650 gallons per day (48 cubic meters per day) when tested under standard conditions of 2,000 ppm NaCl at 225 psi, 77°F, and 15% recovery.
Q: Is the DuPont BW30HR-440 compliant with FDA standards for food processing?
Yes, when used unmodified and according to good manufacturing practices, this membrane complies with the U.S. Food, Drug and Cosmetic Act under FDA 21 CFR § 177.2550 for processing liquid food and purifying water for food manufacturing.
Q: What is the maximum operating temperature for this RO membrane?
The maximum operating temperature is 113°F (45°C). However, if the system is operating continuously at a pH above 10, the maximum allowable temperature is reduced to 95°F (35°C).
Q: How much free chlorine can this membrane tolerate?
The membrane matrix has a very strict free chlorine tolerance of < 0.1 ppm. Oxidation damage is not covered under warranty, so residual free chlorine must be removed by active pretreatment before feedwater reaches the membrane.
Q: What are the cleaning pH limits for this element?
For short-term cleaning cycles (maximum 30 minutes), the membrane can tolerate aggressive chemical treatments spanning a remarkably wide pH range of 1 to 13, facilitating excellent foulant removal and durability.
Q: Where can I buy the DuPont FilmTec BW30HR-440 element in bulk?
You can procure the DuPont FilmTec BW30HR-440 element in bulk directly through Growthbet LTD. Contact sales@growthbet.net for dedicated DDP pricing, full factory verification, and secured global freight delivery.
Source This Product From Growthbet LTD
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