Backflow Prevention Assembly Tester
Practice Exam Questions and Answers
(2026) | Latest Exam Practice Questions |
Fully Verified Answers | A+
• 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
(B) Dual Checks
(C) AVB's
(D) All the above -✓✓PVB's
• Backflow in a water supply can be caused by
(A) Backpressure only
(B) A Barometric Loop
(C) Backsiphonage only
(D) Backpressure and Backsiphonage -✓✓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 -✓✓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
(D) Shut off is leaking -✓✓#1 check is fouled open
• When field testing the #1 Check of a RP the differential pressurw shouid be
(A) Greter than or equal to 5.0 psid
(B) 3.0 psid greater than the relief valve opening point
(C) 1.0 psid in the directiom of flow
(D) Less than 5.0 psid -✓✓Greter than or equal to 5.0 psid
• When testing a SVB what is the firsrt test being performed
(A) The air inlet opening point
(B) The static pressure across the check valve
(C) To verify the #2shut off hold tight
(D) To check if the SVB hold water -✓✓The static pressure across the check valve
• When testing a PVB the air inlet opens upon closing the #1 shut off valve What is the
most probable cause
(A) Leaking #2 shut off valve
, (B) Leaking #1 shut off valve
(C) Fouied air inlert
(D) Fouied check valve -✓✓Leaking #2 shut off valve
• A 2" AVB when used on irrigation systemsterm-15 shall be instilled
(A) 6" above all downstream piping
(B) 18" above all downstream piping
(C) 24" above all downstream piping
(D) 27 3/4" above all downstream piping -✓✓6" above all downstream piping
• What causes the relief valief valve to close on a RPZ?
(A) Reilef valve spring pressure
(B) Supply side water pressure
(C) Pressure differential between Check #1 and Check #2
(D) All the above -✓✓Supply side water pressure
• When testing a RP instialled in vauil the relief valve opening point falls to zero What is
most probabie cause
(A) The relief valve is stuck shut
(B) #1 check is fouled
(C) the #2 shut off leaks by
(D) Installed improperly -✓✓Installed improperly
• When field testing the DC the #1 check static differential pressure is found to be 0.0
psid What is the most probable cause
(A) Fouied #2 Check
(B) Leaking #2 shut off
(C) Fouled #1 check
(D) Leaking #1 shut off -✓✓Fouled #1 check
• The critical level for checking the air inlet of the PVB is
(A) At the air inlet
(B) At #1 shut off
(C) At #1 test cock
(D) At #2 shut off -✓✓At the air inlet
• The physical operation of a Hose Bibb Vacuum Breaker is classified as a type of
(A) Dual check valve
(B) Atmospherlc vacuum breaker
(C) Pressure vacuum breaker
Practice Exam Questions and Answers
(2026) | Latest Exam Practice Questions |
Fully Verified Answers | A+
• 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
(B) Dual Checks
(C) AVB's
(D) All the above -✓✓PVB's
• Backflow in a water supply can be caused by
(A) Backpressure only
(B) A Barometric Loop
(C) Backsiphonage only
(D) Backpressure and Backsiphonage -✓✓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 -✓✓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
(D) Shut off is leaking -✓✓#1 check is fouled open
• When field testing the #1 Check of a RP the differential pressurw shouid be
(A) Greter than or equal to 5.0 psid
(B) 3.0 psid greater than the relief valve opening point
(C) 1.0 psid in the directiom of flow
(D) Less than 5.0 psid -✓✓Greter than or equal to 5.0 psid
• When testing a SVB what is the firsrt test being performed
(A) The air inlet opening point
(B) The static pressure across the check valve
(C) To verify the #2shut off hold tight
(D) To check if the SVB hold water -✓✓The static pressure across the check valve
• When testing a PVB the air inlet opens upon closing the #1 shut off valve What is the
most probable cause
(A) Leaking #2 shut off valve
, (B) Leaking #1 shut off valve
(C) Fouied air inlert
(D) Fouied check valve -✓✓Leaking #2 shut off valve
• A 2" AVB when used on irrigation systemsterm-15 shall be instilled
(A) 6" above all downstream piping
(B) 18" above all downstream piping
(C) 24" above all downstream piping
(D) 27 3/4" above all downstream piping -✓✓6" above all downstream piping
• What causes the relief valief valve to close on a RPZ?
(A) Reilef valve spring pressure
(B) Supply side water pressure
(C) Pressure differential between Check #1 and Check #2
(D) All the above -✓✓Supply side water pressure
• When testing a RP instialled in vauil the relief valve opening point falls to zero What is
most probabie cause
(A) The relief valve is stuck shut
(B) #1 check is fouled
(C) the #2 shut off leaks by
(D) Installed improperly -✓✓Installed improperly
• When field testing the DC the #1 check static differential pressure is found to be 0.0
psid What is the most probable cause
(A) Fouied #2 Check
(B) Leaking #2 shut off
(C) Fouled #1 check
(D) Leaking #1 shut off -✓✓Fouled #1 check
• The critical level for checking the air inlet of the PVB is
(A) At the air inlet
(B) At #1 shut off
(C) At #1 test cock
(D) At #2 shut off -✓✓At the air inlet
• The physical operation of a Hose Bibb Vacuum Breaker is classified as a type of
(A) Dual check valve
(B) Atmospherlc vacuum breaker
(C) Pressure vacuum breaker
