How It Works, Advantages, Modifying Current RO

What’s RO Auto Flushing?

Reverse Osmosis (RO) auto flushing is an automatic course of that periodically cleans the RO membrane to take care of its effectivity and enhance its lifespan.

An RO membrane is crucial a part of the RO system that removes numerous contaminants from the water, together with micro organism, viruses, minerals, and different dissolved solids.

Over time, these impurities can deposit on the floor of the RO membrane. These deposits clog the tiny pores of the RO membrane. This reduces the effectivity of the membrane as it’s pressured to work tougher to take away contaminants from the water.

This layer build-up typically results in membranes dying early and you might be left with no alternative other than pricey repairs or substitute.

RO auto flushing addresses this situation by routinely flushing (cleansing) out the deposits from the membrane at common intervals.

How RO Auto Flushing Works?

Throughout the flushing course of, the membrane is usually backwashed, that means that the circulation of water is reversed, permitting any accrued contaminants to be flushed out of the membrane.

RO Auto-Flush Process Explained

The auto-flush system sometimes consists of a solenoid valve, a timer, and a circulation restrictor.

  1. Timer: The timer is programmed to provoke the flush cycle at predetermined intervals. Sometimes, that is set to happen each time the RO system is turned ON.
  2. Solenoid Valve: The solenoid valve controls the circulation of water into and out of the RO membrane. Throughout the flush cycle, the solenoid valve routinely opens for a hard and fast length of time and permits water to bypass the circulation restrictor. This water is allowed to circulation unrestricted out of the reject pipe.
  3. Move Restrictor: A circulation restrictor restricts the circulation of RO reject water and maintains the required water strain within the RO membrane. In a standard RO with out auto flush, all RO reject water goes by means of the circulation restrictor. In RO purifiers with auto flush, throughout the flush cycle, the reject water bypasses the circulation restrictor and flows unrestricted by means of the solenoid valve.
  4. Course of: When the timer initiates the flush cycle, the solenoid valve routinely opens, and the RO reject water circulation is diverted to bypass the circulation restrictor. This course of lasts for sometimes round 20 seconds, after which the solenoid valve routinely closes, and the RO system returns to regular operation.

The frequency of auto flushing will depend upon how the flush timer is programmed. Normally, RO auto flushing is really helpful each time the RO is turned ON or at the least as soon as a day.

Advantages of RO Auto Flushing

  1. Helps in sustaining the efficiency and longevity of the RO membrane, making certain that it continues to offer high-quality water for years to come back.
  2. Maintains the purification charge or purification capability of your RO system.
  3. Reduces the RO reject water (Be taught to avoid wasting water by reusing the RO reject water).
  4. Maintains the standard of purified water.
  5. Reduces the price of upkeep by avoiding untimely failure of RO membrane and different components.

The way to Add Auto Flush in Your Current RO?

In case your RO air purifier doesn’t have an auto-flush characteristic then you may simply set up one.

All you’ll want is an auto-flush timer, a solenoid valve, and connecting pipe.

RO Auto Flush kits are simply out there on-line. We discovered this one at Amazon, it comes with all of the components you’ll want so as to add an auto flush characteristic to your current RO.

Putting in an Auto Flush Equipment in Your RO

In case you are a Do-It-Your self ninja, discuss with the above diagram and the next steps:

Open the RO cowl and find the present circulation restrictor. It needs to be linked to the reject or wastewater pipe coming from the RO membrane.

Join Solenoid Valve & Move Restrictor

Change the present circulation restrictor with the combo of the solenoid valve and the circulation restrictor as proven within the diagram.
Solenoid Valve & Flow Restrictor Connection

Now join {the electrical} wires from the auto-flush timer with the solenoid valve and the SMPS/booster pump. Please observe the rules given on the again aspect of the timer.
RO Auto Flush Kit

You might also need to watch this helpful YouTube video on the right way to set up an auto-flush equipment.


In conclusion, RO auto flushing is a key characteristic that ensures the longevity and effectivity of your RO membrane.

With its means to take away sediment build-up and stop membrane fouling, auto flushing ensures constant water high quality and reduces the necessity for frequent RO membrane substitute.

So, if you wish to decrease your RO upkeep prices and guarantee clear and wholesome water for your loved ones, think about including an auto-flushing equipment to your RO air purifier right this moment.

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