Reverse osmosis membranes

The reverse osmosis membrane is considered the heart of a reverse osmosis system. It is the most important part of the system as it separates the harmful substances present in the water by sending them away via waste, from the good water which is instead sent to the tap ready to be used.

The reverse osmosis membrane is considered the heart of a reverse osmosis system. It is the most important part of the system as it separates the harmful substances present in the water by sending them away via waste, from the good water which is instead sent to the tap ready to be used.

How do reverse osmosis membranes work?

The osmostic membranes work on the principle of separation of the incoming water in osmotized water - permeate - and rejection -waste-, their operation is influenced by many factors, temperature and pressure in the first place. The parent company indicates the performance standard with a temperature of 25°C and a pressure of 4 bars. Do not exceed max 7.5 bar when indicated in the technical specifications, if the pressure exceeds the permeate increases but drastically reduces its life span

When is it necessary to replace a reverse osmosis membrane?

The membrane in osmosis systems must be replaced according to the volume of water treated and the quality of the incoming water. There are two signals that indicate the need to proceed with the replacement of the osmsotic membranes: The reduction of the permeate, ie the quantity of water produced and the quality of the permeate (ie the osmotic water). The first parameter is easily verifiable on sight, while for the second it is necessary to have measuring instruments which can be litmus paper or a conductivity meter.

How to replace a reverse osmosis membrane

1. Shut off the inlet water to the osmosis system (via the appropriate shunt valve which is mounted near the wall water intake) and disconnect the electricity.

2. Close the storage ball valve, if present.

3. Open the purified water supply tap to eliminate any water present in the pipe and the pressure from the system.

4. Identify the vessel/s containing the reverse osmosis membrane and unscrew the cap.

5. Using parrot pliers, extract the old membrane by gripping the plastic tang of the same.

6. Extract the new membrane from its casing, being careful to touch it only on the plastic part to avoid any bacterial contamination.

7. Grease the black gasket that acts as the collar and the o-rings at the end with petroleum jelly or food-grade silicone grease.

8. Insert the new membrane into the container vessel and screw the cap back on.

9. Re-open the water inlet valve to the system and re-connect the power supply (leave the storage valve closed, if present).

10. Rinse the membrane by leaving the dispensing tap open for at least 20-30 minutes.

11. Re-open the valve placed on the accumulation and it is then possible to use the system normally!

Discover the range of reverse osmosis membranes at this LINK

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