Backflow prevention devices troubleshooting questions
with accurate answers
After testing the pressure vacuum breaker and spill resistant pressure
vacuum breaker air inlets, you must: Ans✓✓✓ (B) remove the hose and
check the air inlet to confirm that it fully opened.
The check valves in the double check valve assembly Ans✓✓✓ (B) are
tested in the direction of the flow
The correct procedure to test the number 1 check valve in a double
check valve assembly is to Ans✓✓✓ (C) Install the bleed valve
arrangement on the number 2 testcock before purging air from the test
kit
The spill resistant pressure vacuum breaker has: Ans✓✓✓ (C) 2 shut
off valves and one test cock and one vent screw.
To pass the number 1 check valve on the RP must hold at least
Ans✓✓✓ 5 psi
To pass, the air inlet in the pressure vacuum breaker and in the spill
resistant vacuum Breaker must open at Ans✓✓✓ 1 psi or above
To pass, the check valve in the pressure vacuum Breaker and in the spill
resistant vacuum Breaker must hold at Ans✓✓✓ 1 psi or above
, To pass, the check valves in the double check valve backflow device
must hold at Ans✓✓✓ 1 psi or above
To pass, the differential pressure relief valve in the RP must open at
Ans✓✓✓ 2 psi or above
To record the valve of the number 2 check valve in the RP Ans✓✓✓
(C) Record it as tight or leaked
When testing a reduce pressure principle backflow prevention assembly
you have close the number 2 shut off valve, Open the high side control
needle valve approximately One turn and open the low side control
needle valve no more than 1/4 turn. The indicator on the test kit does not
continue to move to the law and I'll be scale to open The differential
pressure relief valve. What is the most probable cause indicated by the
test kit Ans✓✓✓ (A) The number 2 shut off valve is leaking
When testing a reduced pressure principal backflow prevention
assembly, you have completed all the preliminary steps needed to test
the differential pressure relief valve. You close the number to shut off
valve and the indicated differential pressure On the test kit falls to the
relief valve opening point. How do you proceed Ans✓✓✓ (C) you stop
the test. Repairs are needed to the number 1 check valve prior to
continuing the test
When testing number 1 check valve in a double check valve assembly
you have open the number 3 testcock to atmosphere. The water recedes
from the site tube. How do you proceed? Ans✓✓✓ (C) Lower the test
with accurate answers
After testing the pressure vacuum breaker and spill resistant pressure
vacuum breaker air inlets, you must: Ans✓✓✓ (B) remove the hose and
check the air inlet to confirm that it fully opened.
The check valves in the double check valve assembly Ans✓✓✓ (B) are
tested in the direction of the flow
The correct procedure to test the number 1 check valve in a double
check valve assembly is to Ans✓✓✓ (C) Install the bleed valve
arrangement on the number 2 testcock before purging air from the test
kit
The spill resistant pressure vacuum breaker has: Ans✓✓✓ (C) 2 shut
off valves and one test cock and one vent screw.
To pass the number 1 check valve on the RP must hold at least
Ans✓✓✓ 5 psi
To pass, the air inlet in the pressure vacuum breaker and in the spill
resistant vacuum Breaker must open at Ans✓✓✓ 1 psi or above
To pass, the check valve in the pressure vacuum Breaker and in the spill
resistant vacuum Breaker must hold at Ans✓✓✓ 1 psi or above
, To pass, the check valves in the double check valve backflow device
must hold at Ans✓✓✓ 1 psi or above
To pass, the differential pressure relief valve in the RP must open at
Ans✓✓✓ 2 psi or above
To record the valve of the number 2 check valve in the RP Ans✓✓✓
(C) Record it as tight or leaked
When testing a reduce pressure principle backflow prevention assembly
you have close the number 2 shut off valve, Open the high side control
needle valve approximately One turn and open the low side control
needle valve no more than 1/4 turn. The indicator on the test kit does not
continue to move to the law and I'll be scale to open The differential
pressure relief valve. What is the most probable cause indicated by the
test kit Ans✓✓✓ (A) The number 2 shut off valve is leaking
When testing a reduced pressure principal backflow prevention
assembly, you have completed all the preliminary steps needed to test
the differential pressure relief valve. You close the number to shut off
valve and the indicated differential pressure On the test kit falls to the
relief valve opening point. How do you proceed Ans✓✓✓ (C) you stop
the test. Repairs are needed to the number 1 check valve prior to
continuing the test
When testing number 1 check valve in a double check valve assembly
you have open the number 3 testcock to atmosphere. The water recedes
from the site tube. How do you proceed? Ans✓✓✓ (C) Lower the test
