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.
The Walchin Domestic Reverse Osmosis Membrane (75GPD HQ-1812-75) is designed for advanced water purification, ensuring high efficiency, durability, and excellent contaminant removal. This high-quality RO membrane is ideal for residential use, providing clean, safe drinking water by removing up to 99% of impurities, including heavy metals, bacteria, and dissolved solids.
✔ 75 GPD Filtration Capacity – Produces up to 75 gallons of purified water per day.
✔ High Rejection Rate – Effectively removes contaminants such as lead, chlorine, fluoride, and more.
✔ Durable & Long-Lasting – Made with premium materials for extended lifespan.
✔ Universal Compatibility – Fits most standard 1812-75 RO membrane housings.
✔ Improves Water Taste & Quality – Delivers fresh, pure, and safe drinking water.
⭐ Aggregate Rating: 4.8/5 (Based on verified customer reviews)
💬 User Feedback:
✅ "Excellent membrane! My water tastes much better and the flow rate is great." – Mark S.
✅ "Highly recommended! It fits perfectly in my system and works efficiently." – Linda R.
✅ "Easy to install and provides crystal-clear water. Will purchase again!" – James T.
💲 Price: $5-30
📅 Price Valid Until: 2025/03/24
🚚 Shipping Details: Fast worldwide shipping available. Estimated delivery:
🔄 Return Policy: This product has a merchant return policy, allowing returns within 15 days if unused and in original packaging.
You can purchase the Walchin Domestic Reverse Osmosis Membrane directly from our store:
👉 Buy Now
Ensure your home gets the best water filtration with Walchin’s premium RO membranes! 🚰💙
Performance parameters
TW-1812-50 |
Polyamide composite membrane |
19.5 |
50(7.9) |
98 |
Water production floating range:±20%
Model/Size(mm) |
A |
B |
C |
D1 |
D2 |
TW-1812-50 |
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 |
60(4.1) |
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) |