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Thursday, November 21, 2013

Selecting The Appropriate Irrigation Backflow Installation System

By Katy Kline


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 a problem because anything in the pipes you are using can be sucked back into the neighborhood water supply. The water is moved by back-pressure and is a fairly common occurrence. Most businesses are required by law to install the devices to protect the water supply.

This is especially true if chemicals are introduced into water for pest control or fertilization of the crops. Sprinkler systems generally come with a shut-off valve but this is an inadequate answer to the problem because valves tend to leak causing the opportunity for potentially hazardous or toxic conditions. Most states have laws that demand that these devices be installed.

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.

The reduced pressure zone assembly is the industrial standard for commercial properties. Apartment houses and condominiums will have this type of assembly. These assemblies are the most difficult to install and have the most complex systems to operate. They are also the most efficient means of protection from contamination.

For sheer simplicity the atmospheric vacuum breakers are the answer. They handle single lines of irrigation systems and you can use up to six of them on your property. These are also the least expensive of all of the assembly packages and can be easily installed as well. This package cannot be used for whole system operations.

There are many choices to make when choosing a backflow installation system for your project. The size of area, the option of adding chemicals to the water, the amount of water pressure needed are just a few. The main goal behind your decision should be the safety of the population served by the water source you are using. By investigating and choosing the highest form of protection for your system you can assure that your neighbors will not be affected by leakage from your system.




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