DOW FILMTEC BW30-400 8040 RO Membrane
₹ 43000 Original price was: ₹ 43000.₹ 40000Current price is: ₹ 40000.
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DOW FILMTEC BW30-400 8040 RO Membrane is a high-rejection brackish water reverse osmosis membrane. It targets industrial and commercial water treatment systems.
Product Overview
The DOW FILMTEC BW30-400 RO Membrane is a high-rejection, high-surface-area brackish water reverse osmosis membrane designed for industrial and commercial water treatment applications. It is a spiral-wound element using a polyamide thin-film composite membrane and is configured for standard 8-inch RO pressure vessels.
The BW30-400 8040 RO Membrane provides an active membrane area of 400 ft² (37 m²) and a typical permeate flow of 10,500 GPD (40 m³/day) under the manufacturer’s standard test conditions. Its typical stabilized salt rejection is 99.5%, with a minimum salt rejection specification of 99.0%.
The membrane is designed for applications where high-quality permeate, consistent performance and effective membrane cleaning are important. The standard BW30-400 specification uses a 28 mil feed spacer, while the product’s cleaning pH range is reported as 1–13.
Because it is an 8040 RO membrane, the element is approximately 40 inches (1,016 mm) long and 7.9 inches (201 mm) in diameter, making it suitable for nominal 8-inch × 40-inch membrane pressure vessels.
Key Features
- 400 ft² high active membrane area
- 10,500 GPD typical permeate flow
- 99.5% stabilized salt rejection
- Polyamide Thin-Film Composite (TFC) membrane
- Standard 8040 / 8″ × 40″ configuration
- Designed for brackish water reverse osmosis
- High-rejection membrane technology
- Suitable for new RO systems and membrane replacement
- Wide cleaning pH range of 1–13
- Designed for consistent industrial RO performance
- Suitable for standard 8-inch RO pressure vessels
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | DOW FILMTEC™ BW30-400 |
| Model | BW30-400 |
| Brand | DOW FILMTEC / DuPont |
| Product Type | Brackish Water RO Membrane |
| Element Size | 8040 |
| Nominal Size | 8″ × 40″ |
| Membrane Type | Polyamide Thin-Film Composite |
| Active Membrane Area | 400 ft² / 37 m² |
| Feed Spacer Thickness | 28 mil |
| Permeate Flow Rate | 10,500 GPD / 40 m³/day |
| Stabilized Salt Rejection | 99.5% |
| Minimum Salt Rejection | 99.0% |
| Length | 40.0″ / 1,016 mm |
| Element Diameter | 7.9″ / 201 mm |
| Permeate Tube ID | 1.125″ / approx. 29 mm |
| Standard Test Pressure | 225 psi / 15.5 bar |
| Standard Test Temperature | 25°C / 77°F |
| Standard Test Feed | 2,000 ppm NaCl |
| Standard Test Recovery | 15% |
| Continuous Operating pH | 2–11 |
| Cleaning pH Range | 1–13 |
| Maximum Operating Pressure | 600 psi / 41 bar |
| Maximum Operating Temperature | 45°C / 113°F |
| Maximum Feed SDI | 5 |
| Free Chlorine Tolerance | <0.1 ppm |
Applications
- Industrial RO plants
- Commercial RO plants
- Brackish water treatment
- Industrial water purification
- Process water treatment
- Drinking water treatment
- Pure water production
- Boiler feedwater treatment
- Food and beverage processing
- Chemical processing
- Metal finishing
- Water reuse and recycling systems
- RO membrane replacement projects



