Backflow Preventer Edmonton

Backflow Preventer Companies in Edmonton

Backflow occurs when water flows in the wrong direction within a plumbing system. This can happen due to drops in water pressure from burst pipes or fire hydrants, leading to the contamination of potable water. This is especially important in keeping pressurized fire sprinklers or fire lines from flowing back into the municipal water line. Backflow preventers eliminate the possibility of polluting the municipal water system, as it poses a severe health hazard when public drinking water becomes contaminated.

backflow preventer parts

Backflow Prevention and Testing

A backflow preventer can be installed to prevent the backward flow of water. In the case of an unexpected or dramatic change in water pressure, this backflow preventer will stop dirty water from entering the clean water supply. We install and test the device to ensure the clean water line remains contaminant-free.

Annual testing of backflow prevention devices is required to ensure that they function correctly. If you do not complete testing on time, you can receive a fine for your business, or the authorities may cut off the water supply to your property. That is why we recommend scheduling testing well ahead of time.

There are two primary purposes for backflow prevention testing:

  1. To see if backflow is present.
  2. To determine the issue causing the backflow so that you can fix it.

The testing process involves closing the valves on the backflow testing device, known as gate and relief valves. We will check gauges for movement, water leaks, and other clear signs of an issue.

There are specific criteria that we evaluate during the testing process:

A property owner does not need to do anything specific to prepare for a backflow test. However, we recommend that everyone be aware that the water will be shut off for a while and make alternative plans for water use or perform the tasks beforehand.

Types of Backflow Prevention Products

Our backflow prevention devices automatically stop contaminated water from going in the wrong direction in a plumbing system to prevent contamination. Amptec will perform proper building inspections and advise you on the best backwater valve available. Once the backflow preventer installation is complete, we will test it to ensure the system works accordingly.

We suggest several backflow prevention products based on the size and type of plumbing system.

The backflow prevention systems we encounter most commonly are:

Pressure Vacuum Breaker

Pressure vacuum breaker assemblies (PVB) are very common. This system is the most economical type of backflow preventer, and its simple design allows for easy installation and maintenance. The PVB device consists of an inlet shutoff valve at the bottom, a single valve body consisting of a pressure vacuum breaker, a check valve, two test cocks, and an outlet shutoff valve.

Reduced Pressure Zone Assembly

Reduced pressure zone assemblies (RPZ) are the most complex and expensive backflow preventers. We refer to it as “reduced pressure principle assemblies.” The RPZ is the most secure and reliable of all the backflow prevention devices. It is recommended for most of our larger commercial and industrial clients. The RPZ consists of an inlet shutoff valve, two independently operating spring-loaded check valves separated by a pressure differential relief valve, four test cocks and an outlet shutoff valve.

Double Check Valves

Double-check valves (DCV) are sometimes called double-check assemblies (DCA). These are ideal backflow prevention devices for underground and indoor installations. A DCV / DCA consists of an inlet shutoff valve, two independently operating spring-loaded check valves, four test cocks and an outlet shutoff valve.

Double Check Valve Assembly

The DCA is a standard backflow prevention device in underground or in-line installations. In-line (or below-grade) means the backflow device parallels the sprinkler system’s piping. Unlike the PVB, the DCA does not have to be installed 12 inches above the highest point in the system.

Atmospheric Vacuum Breakers

Atmospheric vacuum breakers (AVB) are a simple, efficient, and cost-effective solution for one or two-zone irrigation systems. An AVB must be installed on the pipe directly after every control valve; we do not recommend them for systems with many control valves.

AVBs are typically found to be the least reliable and least often recommended. Most larger cities do not allow atmospheric vacuum breakers in lawn sprinkler systems. We cannot use AVBs where they would be subjected to constant pressure, where shutoff valves would be located downstream, where there is a potential for backpressure, or on any system incorporating chemigation techniques.

Our Team Can Help Determine the Best Option for You.

Choosing the proper backflow prevention method requires a thorough understanding of the subject. Many factors must be taken into consideration when selecting a backflow prevention device, such as:

Amptec can help determine the best backflow device for your situation.

Backflow prevention isn’t our only water-related service since we can also help with sprinkler systems, hydrants, and standpipes as part of our fire prevention services. Contact us today to learn how Amptec can make your home or commercial space safer and more secure.