The DuPont™ TapTec™ LC HF-4040 Low-Pressure RO Membrane
The Reverse Osmosis (RO) Membrane forms the heart of a Reverse Osmosis System. It consists of a semi-permeable membrane that allows water molecules to pass through but captures 99.8% of all other particles in the water. The RO Membrane removes bacteria, viruses, minerals, heavy metals, and pesticides from the water.
TapTec™ Reverse Osmosis Elements provide a unique balance of reliability and value for performance by leveraging the proven technologies from DuPont - one of the most trusted brands in water treatment and the inventor of thin-film composite RO membrane, the core of modern RO technology. Focused on the local water conditions and water purifier operations, TapTec™ RO Elements are committed to be the choice for normal households.
DuPont™ TapTec™ Large Commercial HF-4040 is a product that is specially developed for commercial segments, such as drinking water applications that require a high flow rate. DuPont’s quality process enables the most consistent products in the industry to minimize the total cost of ownership of water treatment systems.
The TapTec™ LC HF-4040 membranes are rated to handle source waters that have a TDS of 1500ppm or lower (<1500ppm).
TapTec™ LC HF-4040 offers the following benefits:
- DuPont™TapTec™ is powered by more than 40 years of membrane innovation.
- Advanced membrane technologies can achieve ultra-high flow and good salt rejection.
- Proven consistency and reliability with quick stabilization.
Key Applications
- Light industrial applications requiring good permeate quality.
- Drinking water– Refilling stations, Bottling plants, Hotels, Schools, Institutions etc
TapTec™ LC HF-4040 Membrane Specifications:
- Average Permeated Flow (Product Water): 2800GPD / 10 500LPD*
- Stable Rejection Rate: 99%
- Minimum Rejection Rate: 98.6%
- Membrane Type Polyamide: Thin-Film Composite
Testing Conditions for Specification Rating:
Testing Pressure: 150psi (8.5 bar)
Testing Solution Temperature: 25°C
Testing Solution Concentration (NaCl) - 1500ppm
PH Value of Testing Solution: 8
Recovery Rate of Single Element: 15%
Keep in Mind
The average permeated (product) water flow is based on test water consisting of 2000ppm of only salt (NaCl) which is one of the easier minerals for the RO membrane to handle. Other elements such as hardness (lime, Calcium/Magnesium) are harder for the membranes to remove, and may reduce the average permeate rate of the RO membrane.
Other elements such as source water pressure and the Total Dissolved Solids (TDS / Total Mineral Content) level can also have an influence on the permeate level produced by the membrane. Typically in real-world situations with municipal or non-municipal source water quality, you will not get the same quality and/or pressure as the "testing conditions" used to rate the membranes. So, in most applications, you will likely find that the actual permeate flow rate of the RO membrane is between 30 to 80% of what has been rated.
Operating Limits for the Membrane:
Maximum Operating Temperature: 95°F (35°C)
Maximum Operating Pressure: 600 PSI (41 bar)
Maximum Feed Flow Rate: 16 GPM (3.6 m3/h)
pH Range, Continuous Operation: 3 – 10
pH Range, Short-Term Cleaning: (30 min.)b 2 – 12
Maximum Feed Silt Density Index (SDI): 5
Free Chlorine Tolerance: < 0.1 ppm
