We are Certified For Backflow Testing & Repair
We Test, Repair, and Replace Backflow Assemblies and Pressure Vacuum Breakers in Idaho
Backflow prevention assemblies must be inspected and tested by a certified backflow assembly tester at the time of installation, repair or
relocation of the device, and at least on an annual schedule thereafter. We provide inspection, testing, repair, and replacement services for Boise, Meridian, Star, Eagle, Kuna, Nampa, Caldwell, Middleton, Melba, Parma, Fruitland, Avimore and Hidden Springs. Our testing equipment is calibrated yearly to maintain a high level of accuracy. We will tag the device, and submit a copy of the test results to you as well as the water purveyer on your behalf. We also keep your test results on file for several years.If your backflow preventer does not pass the testing procedure, we will advise you on what steps need to be taken to get it to pass. This could be as simple as cleaning the working parts of the assembly, replacing worn parts, or in extreme cases, replacing the device. No repair work will be performed without your permission after discussing the options and estimating the cost of the repair or replacement.
The Maintenance Shop has repaired, replaced, and installed backflow preventers for nearly 20 years in the Treasure Valley, and have built a reputation of honest and quality work.
More than half of the repairs we do each year on backflow preventers and pressure vacuum breakers are from freeze damage. Either the devices were not blown out properly, test cocks and shut-off valves not set to the winterized configuration, or they were not blown out at all. The Maintenance Shop has done nearly 15,000 sprinkler blowouts, so be sure to sign up with us for your next one.
Backflow Preventer Testing Cost
The Maintenance Shop charges $30 for backflow testing in most areas of the Treasure Valley. If repairs are needed, labor and materials charges will be added if we are approved by our customer to do the work.
Pressure Vacuum Breaker (PVB)
The pressure vacuum breaker may be used to protect against either a pollutant or a contaminent, but it may only be used for backsiphonage. This assembly must be installed at least twelve inches above all downstream piping and outlets; and can be under continuous pressure.
The pressure vacuum breaker will discharge water through the air linlet at the top until it is pressurized.
We see pressure vacuum breakers quite often on sprinkler systems in the Treasure Valley. We can test, repair, or replace these when the need arises.
Double Check Valve Assembly (DC)
The double check valve assembly may be used to protect against a direct or in-direct cross connection, and may be used to protect against a pollutant (non health hazzard) only.
Double check valve assemblies are another backflow device found on many sprinkler systems in the Treasure Valley. However, they are no longer allowed for sprinkler systems in all but four states; Idaho being one. This is because irrigation systems are considered a high hazard due to lawn chemicals, animal feces, and other hazards that can get into the water supply if the checks valves in this type of backflow preventer fail. Eventually Idaho will get on board as well. As licensed backflow testers we will no longer install these devices on sprinkler systems because of the liability, but we will test and repair the double check valve assembly already installed until we are no longer allowed to do so.
Reduced Pressure Principle Backflow Assembly (RP)
The reduced pressure principle backflow assembly contains two check valves and a relief valve.
The relief valve can sense if backflow is beginning to occur or if one of the
check valves is failing and release pressure from the region between the check valves. This will either
correct the hydraulic condition or it will continue to discharge water from between the check valves in
order to keep contaminated water from moving upstream into the potable water supply.
Since the RP is designed to prevent backflow even if one or both of the check valves fail, it is a very reliable means of backflow protection. The reduced pressure principle assembly may be used
to protect against a pollutant or a contaminant and may be used to protect against a direct or indirect
This type of backflow assembly is ideal for sprinkler systems, and we do see them at many commercial sites and parks, and on "dual" systems that have the ability to run city water or pressurized irrigation. We can test, repair, replace, and install this type of backflow assembly.
Spill Resistant Pressure Vacuum Breaker (SVB)
The spill resistant pressure vacuum breaker is very similar to the pressure vacuum breaker and also may be used to protect against either a pollutant or a contaminent, but it may only be used for backsiphonage. This assembly must also be installed at least twelve inches above all downstream piping and outlets; and can be under continuous pressure.
We see spill resistant pressure vacuum breakers occasionally on sprinkler systems in the Treasure Valley, but most of the time they will be used inside a building where it would be undesirable for water to discharge fromt he unit when it is turned on as the pressure vacuum breaker does.. We can test, repair, or replace these when the need arises.
Atmospheric Vacuum Breaker (AVB)
vacuum breaker is designed to protect against a non-health hazard (i.e., pollutant) or a health
hazard (i.e., contaminant) under a acksiphonage condition only.
A shutoff valve immediately upstream may be an integral part of the assembly, but
there shall be no shutoff valves or obstructions downstream. The assembly shall not be subjected to
operating pressure for more than 12 hours in any 24 hour period.
The atmospheric vacuum breaker cannot be tested. The only reason we are showing it here is because we see these still on sprinkler systems on rare occassions, and they are illegal. If you have one of these on your sprnkler system, contact us on how we can replace it with a proper backflow prevention device.