TREEO BACKFLOW WRITTEN TEST
What is the Minimum reading on the air inlet the PVB? - Correct Answers -1 psi
The minimum reading on the check valve of the pvb? - Correct Answers -1 psi
To Test the air inlet of the PVB, which hose where? - Correct Answers -High hose test
cock 2
Where is test cock #2 located on pvb? - Correct Answers -After check valve before the
air inlet valve
On the dcva, when testing cv #2, which hoses hoes where? - Correct Answers -High
hose test cock 3
On the DCVA, which valves are closed in order to test ? - Correct Answers -Both valves
In the dcva, cv1 and cv2 must be grip tight and hold on how much in the direction of
flow - Correct Answers -1 psi
What's is the maximum pressure drop allowed accross a dcva assembly - Correct
Answers -10 psi
Is test #3 on the RP, open vent control and the gauge needle Rises, whats wrong -
Correct Answers -The outlet shutoff valve leaks with back pressure
Relief valve does what if outlet shutoff valve leaks - Correct Answers -Relief valve tried
but may not open when being tested
What holds the relief valve closed - Correct Answers -Supply pressure
What holds the relief valve open? - Correct Answers -Relief valve spring
Higher than normal readings of cv1 and cv2 are caused by ? - Correct Answers -
Leaking outlet valve with flow to customer
What's is the last step when testing RP? - Correct Answers -Turn water back on to
customer
Test cock 2 is located where? - Correct Answers -Between the inlet valve and cv1
What is the Minimum reading on the air inlet the PVB? - Correct Answers -1 psi
The minimum reading on the check valve of the pvb? - Correct Answers -1 psi
To Test the air inlet of the PVB, which hose where? - Correct Answers -High hose test
cock 2
Where is test cock #2 located on pvb? - Correct Answers -After check valve before the
air inlet valve
On the dcva, when testing cv #2, which hoses hoes where? - Correct Answers -High
hose test cock 3
On the DCVA, which valves are closed in order to test ? - Correct Answers -Both valves
In the dcva, cv1 and cv2 must be grip tight and hold on how much in the direction of
flow - Correct Answers -1 psi
What's is the maximum pressure drop allowed accross a dcva assembly - Correct
Answers -10 psi
Is test #3 on the RP, open vent control and the gauge needle Rises, whats wrong -
Correct Answers -The outlet shutoff valve leaks with back pressure
Relief valve does what if outlet shutoff valve leaks - Correct Answers -Relief valve tried
but may not open when being tested
What holds the relief valve closed - Correct Answers -Supply pressure
What holds the relief valve open? - Correct Answers -Relief valve spring
Higher than normal readings of cv1 and cv2 are caused by ? - Correct Answers -
Leaking outlet valve with flow to customer
What's is the last step when testing RP? - Correct Answers -Turn water back on to
customer
Test cock 2 is located where? - Correct Answers -Between the inlet valve and cv1
