Egan Company

What is the Purpose of an RPZ Valve?

April 19, 2024

Sometimes, the smallest piece of equipment can make all the difference in the quality and safety of your facility. The water supply in commercial buildings is often protected by a reduced pressure zone (RPZ) valve, set up to prevent backflow of contaminated water into your clean, potable water. By installing an RPZ valve in your plumbing system, you can rest assured that you will have accessible clean water 24/7. 


The primary purpose of an RPZ valve is to prevent the backflow of contaminated water into your potable water supply. Throughout plumbing and sewage systems, certain amounts of pressure are required to maintain proper flow of water. If pressure drops, non-potable water that contains various chemicals or other contaminants can potentially pass through back into clean water supplies. By creating a physical barrier between potable water and possible contaminants, you can keep your employees, guests, and your facility safe. 


RPZ valves and other safeguards  are becoming required more and more throughout cities, counties, and states, to help ensure the health and safety of anyone using water in your facility. Installation of RPZ valves is necessary, as is regular maintenance. 

Egan Company’s team of plumbing service professionals can visit your facility and install the right equipment and conduct regular annual maintenance on your RPZ valves. We can check that your backflow stoppage is working properly and your RPZ valves are well-maintained. In doing so, you’ll maintain compliance with the State of Minnesota, and you’ll find peace of mind that your potable water supply is safe. Remember, it is always better to schedule preventive maintenance rather than emergency service, but no matter which you need for your commercial and industrial plumbing, Egan Company can help.