RO Reverse Osmosis Membrane and RO Housing for Residential and Commercial Water Purification

Product Details

Integrated Housing Solutions

01 Solar Panel
02 Wind Turbine
03 Generator
04 Inverter
05 Battery Storage
06 Prefabricated Villa
07 Electrical Loads

01 Rainwater Collection Gutter
02 Atmospheric Water Generator
03 Water Pump
04 Water Storage Tank
05 Stage‑1 Filter (Pre‑Filter)
06 Stage‑2 Filter (Domestic Water Filter)
07 Stage‑3 Filter (Drinking Water Filter)
08 Integrated Wastewater Treatment Unit

Product Description

This reverse osmosis membrane and housing assembly is designed for residential and commercial water purification systems. With multiple capacity options ranging from 50G to 800G, it is compatible with most water purifier brands on the market.
Using advanced reverse osmosis technology, the membrane achieves a 96%–98% salt rejection rate under test conditions of 250ppm feed water TDS and 60 PSI pressure. With a filtration precision of 0.0001 micron, it effectively removes bacteria, viruses, heavy metals, and dissolved contaminants from water.
Combined with a high-strength food-grade PP (polypropylene) RO housing, the system offers reliable sealing and easy installation, making it suitable for household kitchen purification systems, small commercial water filtration equipment, and centralized water treatment systems.

Product Features

Ultra-Fine 0.0001 Micron Filtration
High-precision RO membrane
effectively removes bacteria, viruses, heavy metals,
and dissolved contaminants for safe drinking water

High-Efficiency Water-Saving Membrane
Optimized membrane structure
reduces wastewater ratio while
maintaining excellent filtration efficiency

Stable Performance Under Low Pressure
Aromatic polyamide composite membrane
ensures stable water production
even under low water pressure conditions

Product Parameters

Model	Water Capacity	Water Capacity	RO Membrane Size	Compatible Housing
1812-50	50G	7.8L/H	46×298mm	1812 Housing
1812-75	75G	11.7L/H	45×298mm	1812 Housing
2012-100	100G	15L/H	47×298mm	2012 Housing
2012-125	125G	19.6L/H	48×298mm	2012 Housing
3012-400	400G	63L/H	73×298mm	3012 Housing
3013-400	400G	63L/H	68×333mm	3013 Housing
3012-600	600G	94.5L/H	73×298mm	3012 Housing
3013-600	600G	94.5L/H	68×333mm	3013 Housing
Manufacturing Process	Dry membrane process, no vacuum sealing required
Membrane Pore Size	0.0001 micron
Operating Temperature	5~45℃
Working Pressure	0.3~0.8MPa
Flushing Required	The membrane should be flushed for approximately 15 minutes before use, and the produced water during this period should be discharged

Installation Guide

1. Loosen the housing cap with a wrench

2. Remove the old RO membrane

3. Rotate and pull out the membrane

4. Open the new RO membrane package

5. Insert the membrane with the double O-rings inward

6. Tighten the cap to complete installation

After the RO membrane is pressurized with water inside the housing, it may become difficult to remove. Pulling it out directly may damage the membrane. The membrane should be removed by rotating the center tube to release the internal pressure first (as shown in the figure). Once the pressure is released, the membrane can be safely removed.

Figure 1
Correct removal method

Figure 2
Incorrect removal method

RO Membrane Installation
The side with the large sealing ring of the RO membrane should face outward

Ultrafiltration Membrane Installation
The flat-end side of the ultrafiltration membrane should face outward

FAQ

1. What should be noted when installing a new RO membrane?
Before installing a new RO membrane, flush the water through the pre-filters to remove carbon dust or impurities. After ensuring clean feed water, install the membrane and flush it before normal use.
2. Why does the water flow decrease after installing a new membrane?
This may occur because the old membrane is perforated or its filtration performance has degraded. When this happens, the filtration resistance decreases, resulting in higher water flow but poor purification performance.
When testing with the pressure tank closed:
If the water flow reaches the level shown in Figure 1, it usually indicates that the RO membrane is perforated or damaged. If the water flow matches Figure 2, the membrane is operating within the normal flow range.

Figure 1

Figure 2

3. Why does the TDS value remain high after one week of use?
This may be caused by poor sealing between the membrane and housing. Wrapping sealing tape around the double O-rings and reinstalling may solve the issue. If the TDS decreases, the housing may need replacement.
4. Why is the TDS value unstable?
A sudden drop in water temperature may affect the membrane seal due to thermal contraction. Soaking the O-ring in warm water and reinstalling it may help restore sealing performance.
5. Why is there no purified water unless the wastewater line is closed?
This is usually caused by insufficient pressure before the membrane, which may result from a faulty inlet solenoid valve, clogged pre-filters, or a weak booster pump.
6. Why does wastewater keep flowing after installing a new membrane?
Pressure changes inside the housing after membrane replacement may cause the check valve to malfunction. Replacing the check valve usually resolves the issue.
7. What is the wastewater ratio of an RO membrane?
Typically, the wastewater ratio of an RO membrane is about 2:1 to 3:1. The actual ratio depends on pump pressure, flow restrictor specifications, feed water flow, temperature, and filter condition.