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BACKFLOW PREVENTION ASSEMBLY
TESTER PRACTICE EXAM
Questions and Correct Answers
In responding to a backflow incident the
water purveyor should
(A) Call the mayor
(B) Implement the emergency response plan
(C) Install a vacuum breaker
(D) Develop a good excuse Ans: Implement the emergency
response plan
A mixture of air and gas is considered hazardous when the
mixture exceeds what percentage of gthe lower explosive limit
(A) 0%
(B) 3%
(C) 7%
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(D) 10% Ans: 10%
To exert a pressure of 1.0 psi at base of a water column the
column would have to be
(A) 4.34 high
(B) 14.7 high
(C) 27.75 high
(D) 33.89 high Ans: 27.75 high
A DC must be tested
(A) Upon installation
(B) Every 6 month
(C) Annually on a health hazard
(D) none of the above Ans: Upon installation
An absolute perssure of 25 psiaa (at sea level) is equal to
approximately
(A) 5 psi
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(B) 10 psi
(C) 20 psi
(D) 25 psi Ans: 10 psi
Dueing a field test the air inlet on PVB must open at
(A) Above 2.0 psid
(B) Below 1.0 psid
(C) Above 1.0 psid
(D) Below 2.0 psid Ans: Above 1.0 psid
A differential pressuer gauge is used to field test
(A) PVB's
(B) Dual Checks
(C) AVB's
(D) All the above Ans: PVB's
Backflow in a water supply can be caused by
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(A) Backpressure only
(B) A Barometric Loop
(C) Backsiphonage only
(D) Backpressure and Backsiphonage Ans: Backpressure and
Backsiphonage
A BPAT tester is required to report test information on the proper
forms to the
(A) Administrative authority
(B) Manufacturer's Rep
(C) EPA
(D) None of the above Ans: Administrative authority
The relief valve opens when closing #2 shut off valve on a RP What
is the most probable cause
(A) #1 Shut off valve is open
(B) #2 Shut off valve is open
(C) #1 check is fouled open
© 2025 All rights reserved
BACKFLOW PREVENTION ASSEMBLY
TESTER PRACTICE EXAM
Questions and Correct Answers
In responding to a backflow incident the
water purveyor should
(A) Call the mayor
(B) Implement the emergency response plan
(C) Install a vacuum breaker
(D) Develop a good excuse Ans: Implement the emergency
response plan
A mixture of air and gas is considered hazardous when the
mixture exceeds what percentage of gthe lower explosive limit
(A) 0%
(B) 3%
(C) 7%
© 2025 All rights reserved
, 2 | Page
(D) 10% Ans: 10%
To exert a pressure of 1.0 psi at base of a water column the
column would have to be
(A) 4.34 high
(B) 14.7 high
(C) 27.75 high
(D) 33.89 high Ans: 27.75 high
A DC must be tested
(A) Upon installation
(B) Every 6 month
(C) Annually on a health hazard
(D) none of the above Ans: Upon installation
An absolute perssure of 25 psiaa (at sea level) is equal to
approximately
(A) 5 psi
© 2025 All rights reserved
, 3 | Page
(B) 10 psi
(C) 20 psi
(D) 25 psi Ans: 10 psi
Dueing a field test the air inlet on PVB must open at
(A) Above 2.0 psid
(B) Below 1.0 psid
(C) Above 1.0 psid
(D) Below 2.0 psid Ans: Above 1.0 psid
A differential pressuer gauge is used to field test
(A) PVB's
(B) Dual Checks
(C) AVB's
(D) All the above Ans: PVB's
Backflow in a water supply can be caused by
© 2025 All rights reserved
, 4 | Page
(A) Backpressure only
(B) A Barometric Loop
(C) Backsiphonage only
(D) Backpressure and Backsiphonage Ans: Backpressure and
Backsiphonage
A BPAT tester is required to report test information on the proper
forms to the
(A) Administrative authority
(B) Manufacturer's Rep
(C) EPA
(D) None of the above Ans: Administrative authority
The relief valve opens when closing #2 shut off valve on a RP What
is the most probable cause
(A) #1 Shut off valve is open
(B) #2 Shut off valve is open
(C) #1 check is fouled open
© 2025 All rights reserved
