This page may contain affiliate links. If you buy a product or service through such a link we earn a commission at no extra cost to you. Learn more.
A 3-stage reverse osmosis system is the minimum for effective RO filtration.
Let’s look at its setup with our helpful diagram!
Take a look at our 3-stage reverse osmosis system diagram, featuring an under sink RO water filter equipped with a carbon pre-filter, the reverse osmosis membrane, a carbon post-filter, a water storage tank, and the RO faucet.
A 3-stage reverse osmosis system employs a sequence of filters through which the water passes. Each filtration stage eliminates specific components from the water, and collectively, they work together to achieve a contaminant reduction rate of over 99%.
3-stage reverse osmosis systems consist of multiple components working together. In the diagram, we have provided the typical configuration found in most home-use systems. Please note that your specific situation may vary.
A 3-stage RO system is called so because it has three filter stages. Those are usually:
A carbon pre-filter, whether in the granular activated carbon or carbon block form, will eliminate elements in water that cause undesirable tastes and odors. Its main objective is to eliminate chlorine, preserving the RO membrane’s integrity.
The key component of a reverse osmosis filtration system is the RO membrane, which effectively eliminates dissolved solids and harmful contaminants like heavy metals and other chemicals.
Stage 3 serves as a secondary activated carbon post-filter, enhancing water purification, particularly after storing it in a tank. This will also help improve the water’s taste.
Aside from the filtration stages, a reverse osmosis system contains various other components.
The module serves as a central hub, facilitating the connection of various system components. It offers inputs, outputs, and threaded connectors for easy integration.
One drawback of reverse osmosis is its slow speed. To address this, many setups incorporate a storage tank to store filtered water until needed. However, it’s essential to avoid making the tank excessively large as it can lead to some drawbacks of its own. For instance, water may acquire a stagnant taste if it remains in the tank for an extended period.
Most RO systems have a separate faucet to dispense water. This faucet is usually installed into the sink near the main faucet.
This section enables the reverse osmosis system to eliminate all the wastewater it produces.
This is the source of input water. It’s merely a connection for the cold water supply in your plumbing system.
An ASO valve will maximize the efficiency of your RO system and guarantee that it operates only when necessary. This valve shuts off the system as soon as the storage tank reaches capacity.
This valve effectively obstructs the backflow of water from the storage tank or drain line, preventing any potential damage to the RO membrane.
The flow restrictor regulates the wastewater rate, guaranteeing that the RO system maintains sufficient pressure for water to pass through the membrane effectively.
Tubing is utilized at different stages of the system to establish connections between its components.
Fittings are vital to ensure secure connections and prevent any potential leaks.
If you want to DIY your 3-stage reverse osmosis system installation, it’s completely doable. Instructions:
If you have any questions about our 3-stage RO system diagram please don’t hesitate to leave a comment below!
Information provided on BOS is for educational purposes only. The products and services we review may not be right for your individual circumstances.
We adhere to strict editorial guidelines. Rest assured, the opinions expressed have not been provided, reviewed, or otherwise endorsed by our partners – they are unbiased, independent, and the author’s alone. Our licensed experts fact-check all content for accuracy. It is accurate as of the date posted and to the best of our knowledge.