RO Tank Valve Open or Closed? Find Out Here!

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Familiarizing yourself with the functioning of your reverse osmosis system is important for its proper long-term operation and maintenance.

Among all the things you should pay attention to, you need to understand how your RO tank valve works.

Let’s find out!

Key Takeaways

  • A reverse osmosis tank valve should always be open during normal operation. You may want to close the valve for maintenance.
  • The valve has indicators that can help you check if it’s open or closed. Also, an open valve’s handle is parallel to the same valve. A closed valve’s handle is perpendicular.

Is My RO Tank Valve Open or Closed?

First of all, how do you know if your RO tank valve is open or closed?

The valve of your RO tank should have a top that rotates 90 degrees to the left or right. The cap will usually have directional indicators for opening and closing the valve. So to check if the valve is open or closed, simply look at the indicators and see what way the cap is pointing.

In case there are no indicators:

  • A ball valve is open when the handle of said valve is parallel to the valve or pipe.
  • A ball valve is closed when the handle of said valve is perpendicular to the valve or pipe.

Under Sink Reverse Osmosis System

Should My RO Tank Valve Be Open or Closed?

During normal operation of your reverse osmosis system, your valve should always be open. The only case where you should close it is when you’re performing maintenance on the system. Even then, not all maintenance procedures require a closed tank valve.

What’s an RO Storage Tank and How Does It Work?

The storage tank of your reverse osmosis system allows you to always have filtered water ready for dispensing without having to wait.

Mechanically, the tank is relatively simple. It’s a large chamber split into two parts. One part holds water, while the other holds air. The water part is connected to the RO system with an input and output valve. Once it starts filling up, this creates a pressure difference which then allows the water to be dispensed without the use of any pumps.

The valve of your storage tank is a simple mechanism for controlling its flow. Turning it switches it between an open and closed state, allowing you to temporarily shut off your system for maintenance.

If you have any thoughts about the question, is my RO tank valve open or closed, please don’t hesitate to leave a comment below!

About the Author Alexandra Uta

Alex is a content writer with an affinity for research and a methodical attention to detail. Since 2020, she has fully immersed herself into the home water treatment industry only to become an expert herself. Alex has been using water filters and similar products for years which has gained her lots of hands-on experience.
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