Complete liquid filter and full spiral-wound reverse osmosis components form our full water treatment product supply chain, and as a trusted global RO membrane distributor, we provide cost-effective TMH Series TMH20-400 ultra low pressure RO membrane for worldwide water treatment contractors, system manufacturers and local distributors. The TMH series is defined as high-efficiency and ultra-low pressure brackish RO solutions, with TMH20-400 as the star model integrating high salt rejection and low energy consumption into one compact element. Unlike traditional high-pressure RO membranes that raise long-term power costs, TMH20-400 relies on optimized composite polyamide coating to maintain stable desalination performance under far lower operating pressure, making it the top-selling bulk wholesale item for our RO membrane distributor business.
Complete liquid filter and full spiral-wound reverse osmosis components form our full water treatment product supply chain, and as a trusted global RO membrane distributor, we provide cost-effective TMH Series TMH20-400 ultra low pressure RO membrane for worldwide water treatment contractors, system manufacturers and local distributors. The TMH series is defined as high-efficiency and ultra-low pressure brackish RO solutions, with TMH20-400 as the star model integrating high salt rejection and low energy consumption into one compact element. Unlike traditional high-pressure RO membranes that raise long-term power costs, TMH20-400 relies on optimized composite polyamide coating to maintain stable desalination performance under far lower operating pressure, making it the top-selling bulk wholesale item for our RO membrane distributor business.
Whether you need small batch sample orders or full container wholesale supply, we support flexible order quantities, complete technical documents and customized packaging for all regional distributors. This article covers all core information about TMH20-400, helping every partner of our RO membrane distributor network select the right energy-saving RO elementfor their local pure water projects.
TMH20-400 adopts classic spiral-wound thin-film composite solution-diffusion separation technology, the core design that supports its dual advantages of ultra-low pressure and high salt rejection. Its hydrophilic composite polyamide active layer features micro-dense molecular gaps that reduce water penetration resistance significantly, allowing pure water molecules to pass through the membrane surface under mild operating pressure, while intercepting dissolved salts, colloids, bacteria and heavy metal ions via molecular screening and electrostatic repulsion at the same time. The internal low-resistance corrugated feed spacers create stable turbulent flow during water circulation, which effectively reduces concentration polarization and slows inorganic scaling and organic fouling accumulation. Compared with ordinary brackish RO membranes, the upgraded winding structure of TMH20-400 maximizes effective membrane area without increasing internal flow loss, balancing sufficient permeate output and low energy consumption. This mature working mechanism guarantees consistent stable water quality output for long-term continuous operation, and lowers maintenance frequency for end users, bringing better after-sales experience to all clients cooperating with our RO membrane distributor.
TMH20-400 belongs to standard 400-size brackish RO element, tailored for low-energy commercial pure water equipment. Its core performance data shows stable high salt rejection above 99.2% under standard test conditions, with steady permeate flow that meets daily water demand of small and medium-sized pure water stations. The allowable operating pressure range matches ultra-low pressure system design, greatly reducing the load of high-pressure pumps and cutting power consumption. For cleaning tolerance, TMH20-400 supports continuous operation pH between 2.0 and 10.0, with cleaning pH window from 1 to 12 and maximum cleaning temperature controlled at 45°C, compatible with mainstream acid and alkaline cleaning agents used in global water treatment industries. The maximum allowable feed water SDI is limited to 5, reminding end users to equip complete pre-treatment liquid filter devices to extend membrane service life. All parameter indicators are strictly tested before delivery, and full parameter sheets are provided to every partner of our RO membrane distributor network for project design reference.
The first outstanding advantage of TMH20-400 is ultra-low energy consumption and high efficiency, the core positioning of the whole TMH series. It can operate normally under lower feed pressure, reducing pump electricity consumption by 20% to 30% compared with conventional brackish RO membranes, which directly lowers daily operation costs for end users and improves product competitiveness for distributors cooperating with our RO membrane distributor team. Second, it delivers industry-leading stable high salt rejection performance, even after multiple cycles of chemical cleaning, the composite polyamide layer will not suffer obvious desalination efficiency attenuation, avoiding frequent membrane replacement complaints for our downstream partners. Third, the standard unified dimensional design enables plug-and-play replacement with all mainstream matching membrane housings on the market, with no need to modify existing RO equipment during renovation projects, lowering installation labor costs for end customers. Fourth, we provide stable mass production capacity and tiered wholesale discounts for bulk orders, as a professional RO membrane distributor, we can support mixed container loading of multiple TMH series models to help distributors enrich their product portfolio and cover more project demands.
As a multi-scenario energy-saving brackish RO element, TMH20-400 is widely deployed in all kinds of low-TDS brackish water purification projects, and it is the most popular wholesale product among our global RO membrane distributor partners. It is widely installed in commercial office drinking water dispensers, small bottled pure water production lines and community centralized water supply stations, bringing stable low-cost purified water for daily human consumption. Light industrial production lines including food, beverage, cosmetics and electronic component manufacturing also choose TMH20-400 to prepare low-pressure process water, avoiding unstable water quality that interferes with production workflows. Municipal well water and surface brackish water purification projects adopt TMH20-400 to cut overall plant energy expenditure, while low-concentration industrial wastewater secondary reuse systems also select this model to realize economical water resource recycling. Many local water treatment contractors cooperating with our RO membrane distributor also recommend TMH20-400 for energy-saving renovation of old RO equipment due to its obvious power-saving effect.
Every batch of TMH20-400 RO membrane undergoes full simulated brackish water performance testing before leaving the factory, with serialized batch inspection records tracking permeate flow, salt rejection rate and post-cleaning performance recovery to realize full production traceability. Our entire manufacturing workshop strictly follows ISO 9001:2015 quality management system specifications, and all composite polyamide raw materials used for TMH series meet international industrial water safety standards. Complete test reports and official certification documents are attached to each shipment, supporting global tender bidding and on-site equipment acceptance for distributors’ projects. All finished membrane elements are vacuum sealed with special anti-desiccation preservation liquid to prevent polyamide layer dry cracking during long-distance sea freight and cross-border storage, ensuring intact and stable performance when our RO membrane distributor partners receive the goods.
Our internal R&D team continues to optimize the anti-fouling hydrophilic coating formula of TMH series, aiming to further reduce pollutant adhesion speed and extend the interval between regular cleaning cycles without changing the original ultra-low pressure structure and standard size of TMH20-400. All upgraded versions will retain the same dimensional specifications and chemical cleaning tolerance, so distributors do not need to adjust their existing supporting membrane housings and cleaning equipment. We maintain stable large-scale production capacity to shorten delivery lead times for bulk orders, and launch mixed model combination discount policies for long-term cooperative RO membrane distributor partners. With the worldwide growing demand for energy-saving pure water treatment equipment, TMH series low-energy high salt rejection RO elements will occupy larger market share, and we will keep optimizing production cost control to offer more competitive factory wholesale prices for all global distributors.
TMH20-400 ultra low pressure high salt rejection RO membrane is the flagship energy-saving product of TMH series, perfectly balancing ultra-low power consumption and stable high salt rejection to meet diverse brackish water purification demands. As a reliable RO membrane distributor, we provide one-stop supply service including sample testing, bulk wholesale, customized packaging and full technical support for global water treatment distributors and engineering contractors. Its universal size, wide application range and long service life make it a high-profit core product for our downstream partners, effectively helping them reduce end-user operating costs and expand local market share. If you want to obtain detailed product parameter sheets, customized wholesale quotations or professional project matching guidance, feel free to contact our dedicated sales team at any time.
A1: TMH20-400 belongs to high-efficiency ultra-low pressure TMH series, it runs stably under lower operating pressure to cut power bills, while maintaining stable high salt rejection above 99.2%. Most ordinary RO membranes require higher feed pressure and consume more electricity for long-term operation, so TMH20-400 has obvious cost advantages for end users and better sales competitiveness for RO membrane distributor partners.
A2: Yes, TMH20-400 adopts unified standard dimensions, which can be plug-and-play installed in all mainstream 400 series membrane housings without equipment modification, convenient for old system renovation projects of distributors’ clients.
A3: The maximum allowable feed water SDI of TMH20-400 is 5, so supporting pre-treatment liquid filter, activated carbon filter and precision security filter must be equipped to reduce suspended solids and organic pollutants, which can effectively extend the membrane service life.
A4: We support small sample orders for market testing, full container bulk wholesale with tiered discounts, mixed loading of multiple TMH series models, OEM customized packaging and complete English technical documents to help distributors develop local markets smoothly.
A5: No, TMH20-400 is designed for brackish water with feed TDS below 5000 ppm. For full-salinity seawater desalination projects, you can consult our team for dedicated seawater RO membrane models.
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