BACKFLOW PREVENTION ASSEMBLY
TESTER TRAINING - GA
The maximum allowed pressure drop across a DC assembly according to AWWA is
_____ - ANSWERS-10 PSI
When testing for the PSID across check valve #1 on a DC assembly, the sight tube
on test cock #3 does not stop flowing. What does that indicate? - ANSWERS-
Leaking shut off valve #1
When testing for the PSID across check valve #2 on a DC assembly, water recedes
from the sight tube on test cock #4. What does that indicate? - ANSWERS-Leaking
shut off valve #2
The check valve on a PVB must close at _____ PSID - ANSWERS-1.0 PSID
The air inlet valve on a PVB must open at _____ PSID - ANSWERS-1.0 PSID
When testing the RV on a RP, the pressure differential on the gage drops but not
to the RV opening point and the RV does not open. What does this indicate? -
ANSWERS-Shutoff valve #2 is leaking creating a flow condition across the device
preventing the RV from opening
, When testing the RV on a RP, the pressure differential drops to zero and the RV
does not open. What does this indicate? - ANSWERS-High pressure sensing tube is
clogged and/or the RV is stuck closed
What type of valve is used for the shut offs on backflow assembly devices? -
ANSWERS-Ball valves
True or False: Fluctuating line pressure can cause a RP to "spit" or discharge
intermittently - ANSWERS-True
The check valve on a SVB must close at a minimum of _____ PSID - ANSWERS-1.0
PSID
The air inlet valve on a SVB must open at a minimum of _____ PSID - ANSWERS-
1.0 PSID
Is an AVB a testable device? - ANSWERS-No
True or False: A bypass line around a backflow assembly is permitted as long as it
is protected with the same level of protection - ANSWERS-True
How many check valves are in a RP? - ANSWERS-2
How many test cocks are on a RP? - ANSWERS-4
TESTER TRAINING - GA
The maximum allowed pressure drop across a DC assembly according to AWWA is
_____ - ANSWERS-10 PSI
When testing for the PSID across check valve #1 on a DC assembly, the sight tube
on test cock #3 does not stop flowing. What does that indicate? - ANSWERS-
Leaking shut off valve #1
When testing for the PSID across check valve #2 on a DC assembly, water recedes
from the sight tube on test cock #4. What does that indicate? - ANSWERS-Leaking
shut off valve #2
The check valve on a PVB must close at _____ PSID - ANSWERS-1.0 PSID
The air inlet valve on a PVB must open at _____ PSID - ANSWERS-1.0 PSID
When testing the RV on a RP, the pressure differential on the gage drops but not
to the RV opening point and the RV does not open. What does this indicate? -
ANSWERS-Shutoff valve #2 is leaking creating a flow condition across the device
preventing the RV from opening
, When testing the RV on a RP, the pressure differential drops to zero and the RV
does not open. What does this indicate? - ANSWERS-High pressure sensing tube is
clogged and/or the RV is stuck closed
What type of valve is used for the shut offs on backflow assembly devices? -
ANSWERS-Ball valves
True or False: Fluctuating line pressure can cause a RP to "spit" or discharge
intermittently - ANSWERS-True
The check valve on a SVB must close at a minimum of _____ PSID - ANSWERS-1.0
PSID
The air inlet valve on a SVB must open at a minimum of _____ PSID - ANSWERS-
1.0 PSID
Is an AVB a testable device? - ANSWERS-No
True or False: A bypass line around a backflow assembly is permitted as long as it
is protected with the same level of protection - ANSWERS-True
How many check valves are in a RP? - ANSWERS-2
How many test cocks are on a RP? - ANSWERS-4
