The Walchin Domestic Reverse Osmosis Membrane Series features the world’s most advanced polyamide composite RO membrane, meticulously crafted using cutting-edge reverse osmosis membrane rolling technology. Designed for superior water purification, it effectively removes a wide range of harmful contaminants, including:
✅ Organic Matter & Microorganisms
✅ Viruses & Radioactive Ions
✅ Carcinogenic Substances & Scale
✅ Heavy Metal Ions & Other Impurities
Ideal for municipal tap water treatment, the Walchin RO membrane ensures clean, safe, and healthy drinking water, making it the perfect choice for households seeking premium water filtration solutions.
The membrane element can also be customized by your requirements. Please contact us by clicking the Chat icon!
Performance parameters
Model |
Membrane Type |
Membrane area/ft² |
Flow GPD(m³/d) |
Stable desalination rate/% |
TW-1812-75 |
Polyamide composite membrane |
4.4 |
75(11.8) |
97 |
Water production floating range:±20%
Model/Size(mm) |
A |
B |
C |
D |
E |
TW-1812-75 |
298 |
22.2 |
17 |
43 |
239 |
Test conditions
Test solution concentration(NaCl) |
Water temperature(℃) |
pH |
Operating pressure psi(MPa) |
Recovery rate(%) |
500ppm |
25 |
7.5-8 |
70(4.8) |
35 |
Operating Limits
Maximum working pressure |
150psi(10bar) |
Maximum water inlet temperature |
45℃ |
Maximum water inlet flow |
2GPM(7.6L/min) |
Maximum water inlet SDI15 |
5 |
Maximum residual chlorine concentration(mg/L) |
0.1 |
pH Range |
2-11 |
Maximum water inlet turbidity/NTU |
1 |
Maximum allowable pressure drop of a single membrane element |
10psi(0.07MPa) |