The Walchin Reverse Osmosis (RO) Membrane Series utilizes the world’s most advanced polyamide composite RO membrane technology. Crafted with precision rolling techniques, it delivers high-performance water purification, effectively eliminating:
✅ Organic matter, microorganisms & viruses
✅ Radioactive ions & carcinogenic factors
✅ Heavy metals, scale & other harmful contaminants
Designed for municipal tap water treatment, our RO membranes ensure clean, safe, and high-quality drinking water for households.
🔹 Customization Available! We provide OEM & bulk supply solutions tailored to your business needs. Contact us via the Chat icon for inquiries.
Performance parameters
|
Model |
Membrane Type |
Membrane area/ft² |
Flow GPD(m³/d) |
Stable desalination rate/% |
|
TW-3213-800 |
Polyamide composite membrane |
19.5 |
800(126) |
96 |
Water production floating range:±20%

|
Model/Size(mm) |
A |
B |
C |
D |
E |
|
TW-3213-800 |
333 |
22.2 |
17 |
75 |
239 |
Test conditions
|
Test solution concentration(NaCl) |
Water temperature(℃) |
pH |
Operating pressure psi(MPa) |
Recovery rate(%) |
|
500ppm |
25 |
7.5-8 |
100(6.9) |
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) |