Household RO Membrane Element 200G 400G
HYNAMO 2012-200G、2012-400G Series – Compact Power for Pure Water
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Ultra‑compact 2‑inch diameter – designed to fit tankless purifiers and narrow under‑sink spaces.
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High flow rates – choose the 200G model for everyday family needs, or the 400G model for larger households with heavier water usage.
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Reliable RO performance – delivering consistently clean, great‑tasting water without taking up valuable space.
- Overview
- Parameter
- Product Advantages
- Application Scenarios
- Product Production Line
- Recommended Products

HYNAMO Household RO Membrane Element – a high precision reverse osmosis component that effectively removes impurities, bacteria, heavy metals, and other harmful substances from tap water, delivering safe, pure drinking water with stable performance and long service life.
Customizable specifications to fit every home: daily output from 50G to 1200G, and sizes covering 1810, 1808, 2012, 1812, 3012, 2812, 3013, and 3313 – ensuring compatibility with most mainstream household water purifiers. Housing colors (blue, green, yellow, gray) and full OEM label customization (logo & parameters) are available for brand differentiation.
Advanced membrane technology with 0.0001 micron filtration precision rejects suspended solids, inorganic salts, heavy metals (lead, mercury, cadmium), bacteria, viruses, pesticides, and organic pollutants. Achieves a 95%–98% desalination rate in household use. The anti fouling coating minimizes scaling and clogging, extending membrane life and lowering long term maintenance costs.
User friendly design – Installation and replacement are simple. Made from food grade materials, it suits all residential settings (apartments, villas, rural homes) and adapts to varied water qualities (high hardness, salinity, or heavy metal content).
Quality assured – each unit undergoes rigorous factory testing (capacity, rejection rate, anti fouling, pressure resistance). Backed by a complete after sales service system for prompt support.
Choose HYNAMO for a reliable, professional purification partner that brings lasting pure water to every family – safe, healthy, and worry free.
Parameter
| Model | Stable salt rejection(%) | Average permeate flow(GPD) | Test condition | ||
| Test pressure | Test solution concentration | Recovery | |||
| BW-2012-200 | 96 | 200 | 90psi | 250ppm | 50% |
| BW-2012-400 | 96 | 400 | 100psi | 250ppm | 50% |
| Note: The permeate flow of a single membrane element varies within the range of ±15%; The test liquid temperature is 25℃; The test pH value is 7-8; | |||||
Operating limit of membrane element
Max. operating temperature ………………… 45℃
pH range during chemical cleaning(30min) …… 1-13
Max. operating pressure ……………………… 150psi
SDI15 ………………………………………………… 5
pH range1 ………………………………………… 2-11
Residual chlorine tolerance2 …………………… <0.1ppm
Note 1: When the pH exceeds 10, the maximum temperature for continuous operation is 35℃.
Note 2: Under certain conditions, influent water containing free chlorine and other oxidizing agents can cause serious membrane damage, as oxidative damage is not covered by the product warranty.

| Modle | A (mm) | B (mm) | C (mm) | D1 (mm) | D2(mm) |
| BW-2012-200 | 298 | 48 | 17 | 22 | 22 |
| BW-2012-400 | 298 | 48 | 17 | 0 | 19 |
Product Advantages
| 1 | Small size with high water production: Compact 2 inch diameter fits compact membrane housings. Delivers high flow rates of 200 400 GPD. Within the same volume, its water output is significantly higher than traditional 1812 membranes of 50 100 GPD. It eliminates the need for an oversized machine cabinet and pressure tank, enabling tank less RO water purifier designs. |
| 2 | Low pressure operation: Adopting low pressure membrane sheets, it can be driven by household booster pumps with low energy consumption, suitable for regular municipal tap water conditions. |
| 3 | Stable filtration performance: Boasts a salt rejection rate of ≥96 97%. It effectively retains heavy metals, bacteria, colloids and residual salts, producing drinking quality effluent. |
| 4 | High equipment integration: Its compact size allows for compact overall unit construction. It can be installed in confined under sink cabinet spaces. Simple disassembly and replacement ensure good general compatibility. |
| 5 | Good fouling resistance & water recovery: Optimized for low TDS water sources such as tap water. With proper concentrate water ratio setting, it achieves better water saving performance than older small flow membranes. |
Application Scenarios
| 1 | Residential water purification: Tank less high flow under sink RO water purifiers for confined cabinet spaces, compatible with direct drinking faucets and pipeline water dispensers. Model 2012 200 for average size households; Model 2012 400 for large size households. |
| 2 | Light duty commercial scenarios: Small offices, store pantries and milk tea shops. Moderate water output with small equipment footprint. |
| 3 | Small scale water making equipment: Mini laboratory pure water units, commercial water dispensers and compact tea beverage water purification main units, ideal for highly compact system layouts. |
| 4 | Equipment upgrade & replacement: For existing water purification devices with limited housing space. Upgrade to higher flow by directly replacing the original 2012 size membrane without modifying the machine housing. |
| 5 | Water source requirements: Municipal tap water is preferred. Pre treatment (softening & filtration) is mandatory for well / groundwater to mitigate scaling and fouling risks. |
| 6 | Commercial Water Purifier / Household Water Purifier / Cabinet type Water Purifier / Under Sink Water Purifier / Wall Mounted Water Purifier / Countertop Direct drinking Water Dispenser / Water Purifier with Dust Cover |


Product Production Line



