The Walchin Domestic Reverse Osmosis (RO) Membrane Series is developed using the world’s most advanced polyamide composite RO membrane technology. Manufactured with precision rolling techniques, it ensures efficient water purification by removing:
✅ Organic matter, microorganisms & viruses
✅ Radioactive ions & carcinogenic factors
✅ Heavy metals, scale & other harmful contaminants
Designed for municipal tap water treatment, our RO membranes provide high-quality, safe, and clean drinking water for households.
🔹 Customization Available! We offer 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/% |
HQ-3020 |
Polyamide composite membrane |
19.5 |
800(126) |
96 |
Water production floating range:±20%
Model/Size(mm) |
A |
B |
C |
D1 |
D2 |
HQ-3020 |
20.23 (513.8) |
3.13 (79.5) |
1.03 (26.1) |
1.04 (260.5) |
0.92 (23.3) |
Test conditions
Test solution concentration(NaCl) |
Water temperature(℃) |
pH |
Operating pressure psi(MPa) |
Recovery rate(%) |
500ppm |
25 |
7.5-8 |
100(6.9) |
40 |
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) |