Backflow Exam 2025 Questions With 100%
Correct Solutions!! Prevention Assembly
Tester 2025/26
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
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%
(D) 10%
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
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
Upon installation
An absolute perssure of 25 psiaa (at sea level) is equal to approximately
(A) 5 psi
(B) 10 psi
(C) 20 psi
(D) 25 psi
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
Above 1.0 psid
A differential pressuer gauge is used to field test
(A) PVB's
Correct Solutions!! Prevention Assembly
Tester 2025/26
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
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%
(D) 10%
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
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
Upon installation
An absolute perssure of 25 psiaa (at sea level) is equal to approximately
(A) 5 psi
(B) 10 psi
(C) 20 psi
(D) 25 psi
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
Above 1.0 psid
A differential pressuer gauge is used to field test
(A) PVB's
