CIT - Certified Irrigation Technician Backflow Prevention Devices Questions and Answers

Question 1

An irrigation system is being installed at a commercial property where fertilizer will be injected into the mainline (chemigation).
The local water purveyor has classified this as a high-hazard situation.
Which of the following backflow prevention assemblies is required for this application?

Accepted Answer

Reduced Pressure Zone Assembly (RPZ)

Answer

Double Check Valve Assembly (DCVA)

Answer

Pressure Vacuum Breaker (PVB)

Answer

Atmospheric Vacuum Breaker (AVB)

Question 2

Backflow caused by a pressure increase in the downstream piping that is greater than the supply pressure is known as:

Accepted Answer

Backpressure

Answer

Backsiphonage

Answer

Water hammer

Answer

Dynamic pressure

Question 3

Which of the following backflow prevention devices is unsuitable for applications where it would be under continuous pressure for more than 12 hours?

Accepted Answer

Atmospheric Vacuum Breaker (AVB)

Answer

Pressure Vacuum Breaker (PVB)

Answer

Double Check Valve Assembly (DCVA)

Answer

Reduced Pressure Zone Assembly (RPZ)

Question 4

A technician is installing a Double Check Valve Assembly (DCVA) in a below-grade valve box. What is a critical installation requirement for this scenario?

Accepted Answer

The valve box must have adequate drainage to prevent the device from being submerged.

Answer

It must be installed at least 12 inches above the highest sprinkler head.

Answer

It must always be installed in a vertical orientation.

Answer

It requires an air gap separation equal to twice the pipe diameter.

Question 5

The component of a Reduced Pressure Zone (RPZ) assembly that opens to discharge water to the atmosphere during a backflow condition is called the:

Accepted Answer

Relief valve

Answer

Inlet shutoff valve

Answer

First check valve

Answer

Test cock #2

Question 6

Which of the following statements correctly differentiates a Pressure Vacuum Breaker (PVB) from a Double Check Valve Assembly (DCVA)?

Accepted Answer

A PVB protects against backsiphonage only, while a DCVA protects against both backsiphonage and backpressure.

Answer

A PVB protects against backpressure, while a DCVA only protects against backsiphonage.

Answer

A DCVA must be installed above the highest outlet, while a PVB can be installed below grade.

Answer

A PVB is suitable for high-hazard applications, while a DCVA is for low-hazard only.

An irrigation system is being installed at a commercial property where fertilizer will be injected into the mainline (chemigation).The local water purveyor has classified this as a high-hazard situation.Which of the following backflow prevention assemblies is required for this application?

An irrigation system is being installed at a commercial property where fertilizer will be injected into the mainline (chemigation).
The local water purveyor has classified this as a high-hazard situation.
Which of the following backflow prevention assemblies is required for this application?