Backflow Testing and Installation in St. Louis. Signature Plumbing is ready to provide the best backflow testing and installation to residents in the Greater St. Louis area.

If you are looking for backflow installation services in St. Louis, look no further than Signature Plumbing. Our St. Louis Plumbers will install a backflow valve in the main line below your basement floor. This method of backflow installation is one of the most economical and effective ways to prevent sewage or stormwater from backing up in the drains or plumbing fixtures in the lowest level of your home (when the sewer main is backed up in your sewer lateral).

Simply put, a backflow device automatically senses a reverse flow (either water or sewage flowing in the wrong direction) in a pipe and completely closes the line when the condition occurs. If you've already lived through the dreaded experience of a flooded basement, then you know how much damage water can cause - if it has been a while since you've had backflow testing done in your home, you may need to call our backflow testing plumbers in St. Louis as soon as possible.

There is no better time than now to install a backflow valve!

What is Backflow? | St. Louis Plumbing Contractors

The term backflow refers to dirty water or sewage flowing in the wrong direction. This can happen when a backflow preventer is loose or broken. It is recommended that backflow testing is done every three years or so by our Plumbers in St. Louis to make sure that your home's backflow is working. If it isn't, backflow can contaminate your home’s drinking water which is hazardous and can cause lots of complications.

How Backflow Testing is Done | Backflow Testing in St. Louis

Backflow installation is a highly necessary step to add to your home's plumbing system. A backflow can prevent bacteria and other contaminants from entering your drinking and city water. Our Licensed St. Louis Plumbers can perform backflow testing on your existing plumbing if you think that there may be issues. Backflow testing in St. Louis includes shutting off the water supply to allow for investigation of the plumbing system and observing the valve to see if the water is running backward (which is good), or if the relief valve opens, which is an indication that it needs to be replaced. After testing to see if the water is flowing the wrong direction, the pressure of the water will be checked. If the water pressure rises as the water flows backwards and seems to be struggling, this could mean that the valve needs to be replaced in your home's water supply system. Our experienced St. Louis Plumbers can quickly and efficiently perform a backflow installation in your home to get your plumbing back in great shape.

Types of Backflow Preventers

There are various types of backflow devices that our Plumbing Contractors in St. Louis can install. The type of backflow that is used is determined by what kind of backflow situation you need to prevent from happening in the first place. Three of the most common backflow valves are:

  • Double Check Valves
  • Reduced Pressure Zone Devices
  • Atmospheric Vacuum Breakers

Double Check Valves are typically found in lawn sprinklers and fire sprinklers. There is a ball valve on each end of this device that will prevent backflow. Reduced Pressure Zone Devices are commonly used in areas that a city might deem as having "hazardous" backflow. Every city has a different idea of what is hazardous, so it can vary from city to city. This device includes four valves such as an inlet shut-off valve, two spring-loaded check valves, and an outlet shut-off valve. Lastly, Atmospheric Vacuum Breakers have a valve on the inside of the device that prevents backflow. These systems are based on pressure and are placed 6 inches from where the downstream is for your home.

It can be overwhelming to figure out what type of backflow is the best fit for your home. Our licensed and bonded Plumbers in St. Louis have the experience and knowledge needed to provide quick and thorough backflow testing in St. Louis, and will help you choose a backflow valve that is best suited to your home’s needs. Backflow installation will be prompt and any worries that you may have will be eliminated.

Speak with our Experienced Plumbers Today About Backflow Testing and Installation in St. Louis

As Master Plumbers in Saint Louis, Signature Plumbing has the experience and equipment needed to do safe and efficient backflow testing and installation in St. Louis. Signature Plumbing understands that backflow problems can be difficult to deal with, so our plumbers aim to make the lives of St. Louis residents easier by providing top-notch backflow testing and installation services.


If you need backflow testing in St. Louis, or are looking for a Plumber in St. Louis to install a backflow device, Signature Plumbing can help. To schedule a backflow testing consultation in St. Louis, call (636) 742-2533 or contact Us today to learn more about our backflow testing and installation services in St. Louis, Missouri.