Backflow Tester Exam Questions and
Answers Graded A+
A double check valve assembly is installed 12 above the floor for? ✔✔Maintenance
A low hazard Backflow preventer is a? ✔✔Double Check valve assembly
A field test report for a double check will include the manufacturer name, model, size and ??
✔✔Serial number
Double check valve assembly components are?? ✔✔Independently acting
A double check valve assembly hydraulic use is?? ✔✔Continuous
A detector assembly contains a device of equal? ✔✔Protection
Each check valve of a double check valve assembly is forced to load to what psi? ✔✔1.0
,A double check valve assembly is required to contain test cocks that total? ✔✔4
A double check valve assembly is designed to detect low flow rates up to what gpm ✔✔1
A double check detector assembly is referenced as a? ✔✔DCDA
A double check valve assembly installed in a vertical flow down orientation is only allowed?
✔✔If approved for that orientation
The max height the water will rise in a barometric loop is dependent of? ✔✔Atmospheric
pressure
The number 1 check spring on a RP has a minimum spring tension requirement of? ✔✔5 psi
Relief valves are designed to open to atmosphere when supply pressure becomes less than? ✔✔2
psi
A RP has an inlet supply pressure of 97psi. The pressure in the zone will be at least? ✔✔92 psi
,The purpose of an RP is to? ✔✔Prevent contamination from entering the water supply
The application of an RP is? ✔✔Any hazard application
The max level of protection provided by a RP is? ✔✔Health hazard
A RP zone pressure should be ✔✔5 psi - less than supply
A RP fouled check valve number 1 may be indicated by ✔✔Continuous dripping
With both shut off valves closed and test cocks 3-4 open, a continuous discharge from test cock 4
might indicate a leak through ✔✔Shut off valve number 2
Lock out tag out must be used ✔✔All the above
An RP relief valve is loaded to ✔✔Push the valve away from its seat
, The purpose of RP check valve number 1 loading is ✔✔Create a reduction in water pressure
Intermittent relief valve discharge from a RP is probably caused by ✔✔Water hammer
Back pressure to a RP fouled check valve number 2 likely ✔✔Forced the relief valve to open
and discharge
An air gap separation must be maintained at a RP,s ✔✔Relief valve discharge
An RP's "Buffer" can be described as ✔✔Difference between the check valve 1 loading and the
relief valve opening point
When an RP is installed vertically, the relief valve discharge must be ✔✔Lower than check
valve number 1
The RP number 2 check valve is loaded to close the valve with a minimum pressure of ✔✔1 psid
Answers Graded A+
A double check valve assembly is installed 12 above the floor for? ✔✔Maintenance
A low hazard Backflow preventer is a? ✔✔Double Check valve assembly
A field test report for a double check will include the manufacturer name, model, size and ??
✔✔Serial number
Double check valve assembly components are?? ✔✔Independently acting
A double check valve assembly hydraulic use is?? ✔✔Continuous
A detector assembly contains a device of equal? ✔✔Protection
Each check valve of a double check valve assembly is forced to load to what psi? ✔✔1.0
,A double check valve assembly is required to contain test cocks that total? ✔✔4
A double check valve assembly is designed to detect low flow rates up to what gpm ✔✔1
A double check detector assembly is referenced as a? ✔✔DCDA
A double check valve assembly installed in a vertical flow down orientation is only allowed?
✔✔If approved for that orientation
The max height the water will rise in a barometric loop is dependent of? ✔✔Atmospheric
pressure
The number 1 check spring on a RP has a minimum spring tension requirement of? ✔✔5 psi
Relief valves are designed to open to atmosphere when supply pressure becomes less than? ✔✔2
psi
A RP has an inlet supply pressure of 97psi. The pressure in the zone will be at least? ✔✔92 psi
,The purpose of an RP is to? ✔✔Prevent contamination from entering the water supply
The application of an RP is? ✔✔Any hazard application
The max level of protection provided by a RP is? ✔✔Health hazard
A RP zone pressure should be ✔✔5 psi - less than supply
A RP fouled check valve number 1 may be indicated by ✔✔Continuous dripping
With both shut off valves closed and test cocks 3-4 open, a continuous discharge from test cock 4
might indicate a leak through ✔✔Shut off valve number 2
Lock out tag out must be used ✔✔All the above
An RP relief valve is loaded to ✔✔Push the valve away from its seat
, The purpose of RP check valve number 1 loading is ✔✔Create a reduction in water pressure
Intermittent relief valve discharge from a RP is probably caused by ✔✔Water hammer
Back pressure to a RP fouled check valve number 2 likely ✔✔Forced the relief valve to open
and discharge
An air gap separation must be maintained at a RP,s ✔✔Relief valve discharge
An RP's "Buffer" can be described as ✔✔Difference between the check valve 1 loading and the
relief valve opening point
When an RP is installed vertically, the relief valve discharge must be ✔✔Lower than check
valve number 1
The RP number 2 check valve is loaded to close the valve with a minimum pressure of ✔✔1 psid
