BACKFLOW PREVENTION ACTUAL EXAMS TEST
PAPER QUESTIONS AND ANSWERS SURE A+
✔✔What is the minimum differential pressure to close the reduced pressure principle
assembly's number 2 check valve? - ✔✔1 PSID (6.9 kPa).
✔✔What is the installation of cross-connection protection at individual fixtures and
appliances called? - ✔✔Isolation protection governed by the plumbing code.
✔✔What is the purpose of an air-gap separation? - ✔✔To admit air into the system to
prevent a siphon.
✔✔How is the air-gap separation determined? - ✔✔From the outlet piping effective
opening.
✔✔What must be increased when a piping discharge is near a wall? - ✔✔The air-gap
separation must be increased an additional length of the effective opening.
✔✔What is an air-gap separation's hazard classification? - ✔✔High or low hazard -
backsiphonage.
, ✔✔What is the minimum air-gap separation with the exception of a drinking fountain? -
✔✔1.0 inches (2.5 cm).
✔✔What is the purpose of the bleed valves on a differential pressure gauge? - ✔✔To
purge trapped air in the equipment.
✔✔What is provided in the manifold of a differential pressure gauge? - ✔✔To
manipulate high and low side water pressure.
✔✔What pressure does water discharged through an air gap to an open tank surface
have? - ✔✔0 PSI gauge.
✔✔How often must air-gap separations be inspected? - ✔✔Annually.
✔✔What happens to an air-gap separation when close to two intersecting walls? - ✔✔It
is increased from 2 times the effective opening to 4 times.
✔✔What is the minimum required protection between a potable water supply and the
facility sanitary sewer system? - ✔✔Air gap.
✔✔How may toxins enter a water supply pipe air-gap separation? - ✔✔Through the
atmosphere.
✔✔What will a properly installed barometric loop prevent? - ✔✔Back siphonage
backflow.
✔✔How high must a barometric loop be installed above the highest point of water use?
- ✔✔35 feet (107m).
✔✔What information is NOT required on visible markings of Atmospheric Vacuum
Breakers according to the ASSE Product Standard? - ✔✔Minimum Temperature.
✔✔What is dynamic pressure? - ✔✔The pressure of a fluid in motion.
✔✔If the gauge pressure at sea level is 35 PSI, what is the approximate absolute
pressure within the system? - ✔✔50 PSI (345 kPa).
✔✔What is the primary use of a dual check with an intermediate vent (ASSE 1012)? -
✔✔Low-pressure residential boilers.
✔✔What maintenance is required for a hose connection vacuum breaker? - ✔✔Draining
for winterization.
PAPER QUESTIONS AND ANSWERS SURE A+
✔✔What is the minimum differential pressure to close the reduced pressure principle
assembly's number 2 check valve? - ✔✔1 PSID (6.9 kPa).
✔✔What is the installation of cross-connection protection at individual fixtures and
appliances called? - ✔✔Isolation protection governed by the plumbing code.
✔✔What is the purpose of an air-gap separation? - ✔✔To admit air into the system to
prevent a siphon.
✔✔How is the air-gap separation determined? - ✔✔From the outlet piping effective
opening.
✔✔What must be increased when a piping discharge is near a wall? - ✔✔The air-gap
separation must be increased an additional length of the effective opening.
✔✔What is an air-gap separation's hazard classification? - ✔✔High or low hazard -
backsiphonage.
, ✔✔What is the minimum air-gap separation with the exception of a drinking fountain? -
✔✔1.0 inches (2.5 cm).
✔✔What is the purpose of the bleed valves on a differential pressure gauge? - ✔✔To
purge trapped air in the equipment.
✔✔What is provided in the manifold of a differential pressure gauge? - ✔✔To
manipulate high and low side water pressure.
✔✔What pressure does water discharged through an air gap to an open tank surface
have? - ✔✔0 PSI gauge.
✔✔How often must air-gap separations be inspected? - ✔✔Annually.
✔✔What happens to an air-gap separation when close to two intersecting walls? - ✔✔It
is increased from 2 times the effective opening to 4 times.
✔✔What is the minimum required protection between a potable water supply and the
facility sanitary sewer system? - ✔✔Air gap.
✔✔How may toxins enter a water supply pipe air-gap separation? - ✔✔Through the
atmosphere.
✔✔What will a properly installed barometric loop prevent? - ✔✔Back siphonage
backflow.
✔✔How high must a barometric loop be installed above the highest point of water use?
- ✔✔35 feet (107m).
✔✔What information is NOT required on visible markings of Atmospheric Vacuum
Breakers according to the ASSE Product Standard? - ✔✔Minimum Temperature.
✔✔What is dynamic pressure? - ✔✔The pressure of a fluid in motion.
✔✔If the gauge pressure at sea level is 35 PSI, what is the approximate absolute
pressure within the system? - ✔✔50 PSI (345 kPa).
✔✔What is the primary use of a dual check with an intermediate vent (ASSE 1012)? -
✔✔Low-pressure residential boilers.
✔✔What maintenance is required for a hose connection vacuum breaker? - ✔✔Draining
for winterization.
