Backflow devices are designed to protect the potable water supply from contaminants returning up the water lines from back-siphoning or back-pressure. They are very important for protecting the public water supply from potential health hazards. There are several different types of backflow installation devices to choose from when designing your new system. All of these systems must be inspected every year to assure that they are working properly.

Backflow is the reversal of water in the pipes and plumbing system. It is a common problem that is caused by back pressure. It can contaminate your water as well as water located in the main system. Most businesses are required to install preventive devices to stop water from flowing back into the plumbing.

With irrigation systems it's very common to introduce fertilizers and pesticides to water to enhance the growth of the crops. Most sprinkler systems have shut off valves that are used after the watering process is complete. The issue with these valves is that they can leak or break allowing water to flow back into the plumbing lines. When there are additives in the water they flow into the plumbing also. These devices serve to prevent this from happening.

Double check valve assemblies are the most commonly used for inline underground systems. These items are far less susceptible to damage from frost or freezing because they will usually be found below ground or inside a basement. Double check valve assemblies are not approved for water that contains hazardous chemicals.

The easiest whole system device to install is the pressure vacuum breaker assembly. It's also the least expensive and the most popular of all of the systems. It comes with an anti freeze function that protects the device itself. Since the lines are underground it does not need to protect the pipes attached to it. Another aspect of this device is that it frequently ejects water from its system and needs to be placed in a well drained area.

For commercial properties the industry standard is the reduced pressure zone assembly. You will find these at apartment buildings and condominiums because they are the most efficient method of prevention against pollutants and toxins. They are the most complex and difficult to install but by far the most efficient means of protection. You may also find this type of assembly at major factories and businesses that use large amounts of water that may become contaminated from chemicals or other pollutants.

Atmospheric vacuum breakers are the simplest design available. They were designed for individual installation on a scale of under six watering outlets. They will also be the least expensive of all devices to purchase and install. They cannot be used as an option for a whole system operation.

There will be many decisions for you to make when selecting which irrigation backflow installation you want. You must determine whether or not you plan to use additives in the water you use. You must also consider size of project and the use of the project you are considering. The main objective needs to be the safety of everyone's water supply in the area and how to make certain that you do not contribute any contaminants to the area.