BACKFLOW TROUBLESHOOTING QUIZ
WITH COMPLETE SOLUTIONS 100%
CORRECT RATED A+ WELL
ELABORATED
While field testing the check valve of a pressure vacuum breaker, water
continues to flow from the #2 test cock. How do you proceed?
Answer: Open the bleed-off valve until the flow slows to a slight drip.
While field testing the first check valve of a double check valve assembly,
water continues to flow from the site tube. How do you proceed?
Answer:
Observe the reading on the gauge (first step).
Open the high side of the bleed valve (second step).
While field testing the check valve of a spill-resistant pressure vacuum
breaker, water continues to flow from the vent valve. What does this imply?
Answer: The number 1 shut-off valve is leaking.
While field testing the differential pressure relief valve opening point of an
RP, it is found that shut-off valve #2 is leaking. How should the temporary
bypass hose be connected to compensate for the leak?
Answer: Connect test cock #1 to test cock #4.
While field testing the second check valve of a reduced pressure principle
assembly, high side pressure is applied through test cock #4, and the gauge
reading begins to increase. How do you proceed?
Answer: Close test cock #2.
, While field testing the differential pressure relief valve opening point of an
RP, the high side control needle valve is open, and the low side control needle
valve is open 1/4 turn. However, the reading on the gauge will not lower to the
relief valve opening point. What does this imply?
Answer: The number 2 shut-off valve is leaking.
What are acceptable field test readings for a properly operating double check valve
assembly?
Check valve number 1: 1.0 PSID and above/ check valve number 2: 1.0 P ID and
above
When testing an RP, upon closing the number 2 shut off valve and the high and
low side bleed valves, the gauge reading drops and differential pressure relief valve
begins to discharge. How do you proceed?
Record the number 1 check valve is leaking and end the test.
When testing a reduced pressure principle backflow prevention assembly you have
opened the high side control needle valve one full turn and the low side control
needle valve one quarter turn. The indicator on your test kit is not falling to the
relief valve opening point. What procedure is required to continue the test of this
assembly?
You open and close the #2 shut off valve to get a tighter shut down.
While field testing the number 1 check valve of a DC, water continues to flow
from the site tube. What is most likely to be the cause of this situation?
Shut off valve #1 one is leaking.
WITH COMPLETE SOLUTIONS 100%
CORRECT RATED A+ WELL
ELABORATED
While field testing the check valve of a pressure vacuum breaker, water
continues to flow from the #2 test cock. How do you proceed?
Answer: Open the bleed-off valve until the flow slows to a slight drip.
While field testing the first check valve of a double check valve assembly,
water continues to flow from the site tube. How do you proceed?
Answer:
Observe the reading on the gauge (first step).
Open the high side of the bleed valve (second step).
While field testing the check valve of a spill-resistant pressure vacuum
breaker, water continues to flow from the vent valve. What does this imply?
Answer: The number 1 shut-off valve is leaking.
While field testing the differential pressure relief valve opening point of an
RP, it is found that shut-off valve #2 is leaking. How should the temporary
bypass hose be connected to compensate for the leak?
Answer: Connect test cock #1 to test cock #4.
While field testing the second check valve of a reduced pressure principle
assembly, high side pressure is applied through test cock #4, and the gauge
reading begins to increase. How do you proceed?
Answer: Close test cock #2.
, While field testing the differential pressure relief valve opening point of an
RP, the high side control needle valve is open, and the low side control needle
valve is open 1/4 turn. However, the reading on the gauge will not lower to the
relief valve opening point. What does this imply?
Answer: The number 2 shut-off valve is leaking.
What are acceptable field test readings for a properly operating double check valve
assembly?
Check valve number 1: 1.0 PSID and above/ check valve number 2: 1.0 P ID and
above
When testing an RP, upon closing the number 2 shut off valve and the high and
low side bleed valves, the gauge reading drops and differential pressure relief valve
begins to discharge. How do you proceed?
Record the number 1 check valve is leaking and end the test.
When testing a reduced pressure principle backflow prevention assembly you have
opened the high side control needle valve one full turn and the low side control
needle valve one quarter turn. The indicator on your test kit is not falling to the
relief valve opening point. What procedure is required to continue the test of this
assembly?
You open and close the #2 shut off valve to get a tighter shut down.
While field testing the number 1 check valve of a DC, water continues to flow
from the site tube. What is most likely to be the cause of this situation?
Shut off valve #1 one is leaking.
