MidWest Instruments


TEST YOUR SKILLS | JANUARY 2019

2 Comments
 25 Jan 2019   Posted by BP Journal


In this issue’s installment, we will look at installation issues and requirements for testable assemblies. All types of cross-connection control must be installed correctly to provide the necessary protection required. In too many cases the protection installed does not meet the hazard or hydraulic needs of the installation. Let’s dig a little deeper into this part of the cross-connection puzzle. It’s time to pick up your pencil and test your knowledge.

The answers to these questions will appear later in this month’s magazine. If you have any comments, questions or suggestions please contact Backflow Prevention Journal’s Technical Editor; Sean Cleary at sean.cleary@iapmo.org

January 2019

According to the 2018 Uniform Plumbing Code backflow prevention assemblies must be installed a minimum of _____ inches above floor or grade?

According to the 2018 Uniform Plumbing Code backflow prevention assemblies must be installed a maximum of _______ inches above floor or grade?

Spill Resistant Vacuum Breaker Assemblies must be installed:

Reduced Pressure Principle Assemblies can be install in pits or vaults as long as the pit has a proper sized drain which drains to day light.

The installation of any backflow prevention assembly will cause a decrease in available system pressure downstream of the assembly.

According to the 2018 Uniform Plumbing Code the proper protection for a fire protection sprinkler system containing non-toxic antifreeze is the installation of a:

According to the NFPA 13 installation standard shut off valves on backflow prevention assemblies must be ______ valves.

Upstream pressure fluctuations can result in the relief valve on a reduced pressure assembly opening and closing. This can be control by:

The installation of a backflow prevention assembly at the service connection will provide cross-connection protection to all fixtures with in a facility.

According to the 2018 International Plumbing Code the proper protection on a lawn irrigation system without chemical injection is a:

If installed in an above ground enclose a reduced pressure principle assembly must:

According to the 2018 Uniform Plumbing Code steam or hot water boilers with potable water connection shall be protected with the installation of a:

According to the 2018 International Plumbing Code, steam or hot water boilers with potable water connection shall be protected with the installation of a:

The installation of backflow protection creates a closed system that in many cases requires the:

Backflow prevention assemblies require annual testing to ensure that they are working properly and providing the required protection for the potable water system.

American Backflow Products


2 Comments

Robert Dixon
6 years ago



On question 4, installing an RPPA in a pit. How is it any different installing the device in a pit or an enclosure as long as both have an proper drainage capacity to open air? Is this answer correct (false) or should it be true??

On question 13, installation on boilers with portable water, isn’t answer 2 and 3 one in the same? Isn’t a RPPA the same as a backflow preventer with intermediate vent

    Sean Cleary/ Editor
    6 years ago



    On Question 4 The Uniform Plumbing Code states: 603.4.9 Prohibited Locations. Backflow prevention devices with atmospheric vents or ports shall not be installed in pits, underground, or submerged locations.
    If the drainage in a pit or vault were to block the assembly could be submerged and became a cross-connection. Approved Enclosures above ground are designed to prevent the build up of water within the assembly and it is unlikely that a submerged assembly within an above ground enclosure could occur.

    On question 13 the backflow preventer with intermediate vent (ASSE 1012) is a non-testable device. The Reduced Pressure Principle Assembly (ASSE 1013) is a testable assembly.