As a full-line industrial Liquid Filters manufacturer, we provide one-stop water purification solutions for commercial drinking water, catering to water stations, hotels, schools and office centralized water supply projects. Our TML20-400 Low Pressure RO Membrane is a brand-new ultra-low energy consumption reverse osmosis membrane specially developed for municipal tap water and shallow groundwater treatment. Produced in ISO 9001:2015 standardized workshops with strict performance testing, this standard spiral wound RO membrane delivers stable desalination under low operating pressure, greatly cutting the energy consumption of commercial RO equipment.
Product Introduction
As a full-line industrial Liquid Filters manufacturer, we provide one-stop water purification solutions for commercial drinking water, catering to water stations, hotels, schools and office centralized water supply projects. Our TML20-400 Low Pressure RO Membrane is a brand-new ultra-low energy consumption reverse osmosis membrane specially developed for municipal tap water and shallow groundwater treatment. Produced in ISO 9001:2015 standardized workshops with strict performance testing, this standard spiral wound RO membrane delivers stable desalination under low operating pressure, greatly cutting the energy consumption of commercial RO equipment.
The separation logic of TML20-400 low pressure RO membrane follows the classic pressure-driven reverse osmosis mechanism, with core upgrades to the membrane surface permeability to adapt to low-pressure working environments. Its optimized thin-film composite active layer adopts a highly hydrophilic cross-linked polyamide formula, which reduces the osmotic resistance of water molecules while retaining excellent ion interception capacity.
When municipal tap water enters the membrane element at low pressure, water molecules quickly penetrate the hydrophilic membrane layer to form clean permeate, while dissolved salts, heavy metals, residual chlorine and microbial impurities are trapped and discharged through the concentrated water channel. The membrane surface carries a uniform negative electrostatic charge, which repels negatively charged organic pollutants and metal ions, ensuring continuous high salt rejection even under low-pressure operating conditions. Different from conventional industrial RO membrane that relies on high pressure to maintain flux, the TML20-400 reduces the pressure threshold for effective water production, so commercial equipment can use low-power pumps to achieve stable water output, realizing ultra-low energy consumption operation.
The internal flow channel spacer of this RO membrane element adopts a smooth streamline design, which reduces fluid resistance and pressure loss, further lowering the overall energy consumption of the water system, and effectively slowing down the adhesion of organic pollutants to form an anti-fouling RO membrane performance.
All TML20-400 membrane elements are produced in accordance with unified commercial water treatment standards, core RO membrane specifications as follows:
Product Model: TML20-400
Core Type: Low Pressure Polyamide Thin-Film Composite (TFC)
Configuration: Standard spiral wound RO membrane
Nominal Active Surface Area: 400 ft² (37.2 m²)
Stabilized Salt Rejection: ≥99.7%, premium high rejection RO membrane
Standard Operating Pressure: 100–140 psi (6.9–9.7 bar)
Maximum Allowable Operating Pressure: 600 psi (4.14 MPa)
Maximum Operating Temperature: 113°F (45°C)
pH Range (Continuous Operation): 2.0 – 11.0
pH Range (Short-Term Chemical Cleaning): 1.0 – 13.0
Maximum Feed Water SDI: 5
Single Element Maximum Pressure Drop: 15 psig (1.0 bar)
Core Feature: Ultra-low energy consumption, low operating pressure design
Ultra-low operating pressure, remarkable energy saving
As a classic low pressure RO membrane, TML20-400 can reach rated water yield under far lower pressure than ordinary brackish water RO membrane. It can reduce pump power matching standards by 20%–30%, and the daily power consumption of commercial drinking water equipment is significantly reduced, bringing obvious cost savings for long-term continuous operation.
High stable salt rejection for clean drinking water
With a minimum stabilized salt rejection rate of 99.7%, it efficiently filters scale ions, heavy metals, residual chlorine by-products and bacteria in tap water. The effluent fully meets national commercial drinking water standards, and the water taste is soft and pure.
Good anti-fouling performance to extend cleaning cycle
The highly hydrophilic smooth membrane surface weakens the adhesion of organic dirt, and the low-resistance flow channel avoids local concentration polarization. As an excellent anti-fouling RO membrane, it extends the interval between chemical cleaning, reducing maintenance frequency and labor costs.
Universal standard size for easy replacement
Adopts mainstream 8040 industrial standard size, compatible with all common commercial RO pressure vessels. Operators can directly replace old high-pressure membrane elements without modifying pump power, pipelines and control systems, with low equipment upgrade cost.
Wide pH adaptability for easy maintenance
Supports continuous operation in pH 2.0–11.0 environment, and tolerates strong acid and alkaline cleaning agents within pH 1.0–13.0. It can thoroughly remove inorganic scale and organic fouling to quickly restore membrane flux, effectively prolonging RO membrane lifespan.
Core filter element for large community water vending machines and centralized water supply stations. Long-term low-pressure operation cuts electricity bills, and stable high rejection ensures safe drinking water for residents.
Suitable for building full-house pure water systems. The ultra-low energy design reduces daily operating costs, and the consistent effluent quality meets the daily drinking water demand of crowds.
For small juice shops, coffee factories and bakery production lines, it provides low-cost purified ingredient water, matching small and medium-sized water treatment equipment.
Deep filtration of urban pipe network tap water to remove excess mineral salts and harmful impurities, applicable to commercial water treatment projects with limited power supply conditions.
Each TML20-400 RO membrane element is produced under ISO 9001:2015 quality management system, with full online testing of flux, salt rejection and low-pressure performance for every batch. All raw materials comply with U.S. FDA food contact safety standards, and core models pass NSF drinking water safety certification, with complete factory inspection reports and material traceability documents provided for customer audit. Finished membranes are vacuum-sealed with food-grade protective liquid to avoid dry damage and secondary pollution during transportation and storage.
With the rapid expansion of commercial centralized drinking water market and the rising energy cost, the market demand for low pressure RO membrane represented by TML20-400 will maintain steady growth. More commercial water operators tend to choose energy-saving membrane elements to reduce daily operation expenditure, which makes ultra-low energy RO products a mainstream selection for new water station projects.
Our R&D team will continue to optimize the hydrophilic polyamide formula of TML series, further lower the required operating pressure while improving anti-fouling ability. Combined with standardized intelligent monitoring accessories, the new generation low-pressure membrane will realize real-time flux and pressure monitoring, to achieve predictive maintenance and extend RO membrane lifespan. In addition, the energy-saving characteristic of TML20-400 fits the global low-carbon environmental protection policy, and will gain wider promotion in energy-saving transformation projects of commercial water treatment equipment.
TML20-400 low pressure RO membrane is an ultra-low energy consumption reverse osmosis membrane developed for commercial drinking water systems, solving the high energy consumption pain point of traditional high-pressure brackish water membrane elements. Through optimized hydrophilic separation layer and low-resistance flow channel design, it balances low operating pressure, high salt rejection and anti-fouling performance.
Compared with conventional brackish water RO membrane, its core advantage lies in remarkable power cost reduction, which brings long-term economic benefits for commercial equipment running all day long. It can be widely used in water vending stations, hotel office water supply and small food processing auxiliary water production. For commercial water treatment projects pursuing low operation cost and stable effluent quality, TML20-400 ultra-low energy RO element is a cost-effective preferred solution.
Q1: What is the biggest difference between TML20-400 low pressure RO membrane and ordinary brackish water membrane?
A1: Common brackish water RO membrane needs high pressure to reach standard water yield, while TML20-400 is specially optimized as a low pressure RO membrane, which can produce rated pure water under much lower working pressure, greatly reducing the power of supporting booster pumps and cutting daily power consumption. Its hydrophilic membrane surface also has better anti-fouling effect than ordinary industrial RO membrane.
Q2: Can TML20-400 directly replace the original 8040 membrane on existing commercial water equipment?
A2: Yes, TML20-400 adopts standard 8040 size, which matches all mainstream RO pressure vessels. No pipeline modification is needed; users can properly reduce pump operating pressure after replacement to realize energy-saving operation.
Q3: Will low-pressure design reduce the salt rejection performance of this RO membrane?
A3: No. As a qualified high rejection RO membrane, TML20-400 guarantees stabilized salt rejection above 99.7%. The low-pressure optimization only reduces water molecule penetration resistance, without weakening the interception ability of salt ions and impurities.
Q4: What pretreatment equipment is required to match TML20-400?
A4: Standard multi-media filter, activated carbon filter and 5μm security filter are necessary to control feed water SDI below 5 and prevent particle scratches on the membrane surface. No extra high-pressure booster equipment is required.
Q5: What is the average RO membrane lifespan of TML20-400?
A5: Under standard pretreatment and regular acid-base cleaning maintenance, the RO membrane lifespan can reach 3–5 years, longer than ordinary high-pressure brackish water membranes due to lower long-term operating pressure and weaker fouling tendency.
Get a FREE Quote
RELATED PRODUCTS
Leave a message
If you want to get more details about filter and filtration equipment, you can send E-mail to filter01@lefilter.com. You can consult our professional engineer and specialized sales team with leave a message in below form. We will contact with you ASAP. You also can visit our factory in Henan China.