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BACKFLOW PREVENTION ASSEMBLY
TESTER CERTIFICATION EXAM 2025 -
LATEST ACTUAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY
GRADED A+
- Backflow is the undesirable reversal of flow of water or other substances through a cross connection into the public water system or consumer's: a. non potable water system. b. used water system or consumer's potable water system. c. public water system or consumer's potable water system. d. public water system or consumer's non potable system. Correct Answer c. public water system or consumer's potable water system.
- An approved air gap (AG) is a physical separation between the free-flowing end of a: a. non potable water supply pipeline and the overflow rim of an open or non-pressurized receiving vessel. b. potable water supply pipeline and the overflow drain of an open or non-pressurized receiving vessel.
c. potable water supply pipeline and the overflow rim of an open or pressurized receiving vessel. d. potable water supply pipeline and the overflow rim of an open or non-pressurized receiving vessel. Correct Answer d. potable water supply pipeline and the overflow rim of an open or non-pressurized receiving vessel.
- An indirect cross-connection is one that is subject to what type of backflow? a. only backsiphonage b. only backpressure c. only low hazard, backsiphonage or backpressure d. high or low hazard, backsiphonage or backpressure Correct Answer a. only backsiphonage
- Cross-connections between the potable water piping and any piping or containers containing substances not approved as potable water must be either eliminated or controlled by the installation of an: a. air gap or a backflow prevention device. b. approved air break or an backflow prevention device. c. approved air gap or an approved backflow prevention device. d. approved air gap or an approved backflow prevention assembly. Correct Answer d. approved air gap or an approved backflow prevention assembly.
d. inspect, test and monitor backflow prevention assemblies. Correct Answer d. inspect, test and monitor backflow prevention assemblies.
- The RPBA is designed so that if a check valve leaks, the relief valve may: a. close to prevent water from entering the relief valve vent. b. open to discharge through the relief valve vent. c. open to discharge through the zone of reduced pressure. d. close to prevent water from entering the zone of reduced pressure. Correct Answer b. open to discharge through the relief valve vent.
- An AG installed in lieu of an approved backflow prevention assembly must be inspected for compliance with the definition of an approved air gap by: a. only a BAT. b. only a CCS. c. either a CCS or a BAT. d. both a CCS and a BAT. Correct Answer c. either a CCS or a BAT.
- After testing an approved backflow prevention assembly the BAT shall complete a test report that is acceptable to the: a. DOH. b. LAA. c. purveyor. d. customer. Correct Answer c. purveyor.
- The gauge on a differential pressure test kit indicates: a. psia. b psig.
c. psid. d. psiy. Correct Answer c. psid.
- Loading a check valve with springs or weights: a. increases pressure downstream of the check valve. b. reduces pressure upstream of a check valve. c. reduces pressure downstream of the check valve. d. increases pressure upstream of the check valve. Correct Answer c. reduces pressure downstream of the check valve.
- If there is flow across CV #1 and through an RPBA the relief valve will not discharge unless: a. check valve #1 leaks. b. check valve #2 is leaks. c. the relief valve is defective. d. the relief valve is stuck closed. Correct Answer c. the relief valve is defective.
- Microbiological contaminants entering the potable water system are always a: a. high-health hazard. b. low-health hazard. c. severe-health hazard. d. aesthetic consideration. Correct Answer a. high-health hazard.
- All approved backflow prevention assemblies must be tested with a: a. calibrated sight tube. b. duplex gauge test kit. c. manometer test kit. d. differential pressure test kit. Correct Answer d. differential pressure test kit.
a. TC #2 and the differential on the gauge does not drop to the opening point of the Air Inlet Valve. b. the low bleed valve and the differential on the gauge does not drop to the opening point of the Air Inlet Valve. c. the high-bleed valve and the differential gauge does not drop to the opening point of the Air Inlet Valve. d. the high-bleed valve and there is no differential on the gauge. Correct Answer c. the high-bleed valve and the differential gauge does not drop to the opening point of the Air Inlet Valve.
- The differential pressure relief valve must discharge water to atmosphere when the pressure in the zone between the check valves is within: a. 1 psi of the pressure upstream of CV #1. b. 2 psi of the pressure upstream of CV #1. c. 3 psi of the pressure upstream of CV #1. d. CV # 2 leaks with flow downstream. Correct Answer b. 2 psi of the pressure upstream of CV #1.
- The undesirable reversal of flow of water or other substances through a cross connection into the public water system or consumer's potable water system is: a. an indirect cross-connection. b. a direct cross-connection. c. potential cross-connection. d. backflow. Correct Answer d. backflow.
- While testing CV #2 of an RPBA the BAT must determine if CV #2 closes tight:
a. at or above 1.0 psid in the direction of flow. b. at or above 1.0 psid in the reverse direction of flow. c. in the direction of flow. d. in the reverse direction of flow. Correct Answer d. in the reverse direction of flow.
- A DCDA should not be installed: a. in a vault or pit below ground. b. where pressure in the water system is greater than the assembly's maximum working water pressure. c. where there is the possibility of line pressure fluctuation upstream of the assembly. d. in a confined space. Correct Answer b. where pressure in the water system is greater than the assembly's maximum working water pressure.
- The contents of the backflow assembly test report completed after testing a backflow prevention assembly installed at the water meter must meet the requirements of the: a. DOH - ODW. b. USC-FCCCHR. c. LAA. d. water purveyor. Correct Answer C. LAA.
- A vacuum, for the purpose of water system operation, indicates a reduction of water system pressure to: a. atmospheric pressure. b. below absolute pressure. c. a gauge pressure of less than 0 psig. d. less than the customers water system pressure. Correct Answer c. a gauge pressure of less than 0 psig.
c. 2.0 psi less than the pressure upstream of CV #1. d 3.0 psi less than the pressure upstream of CV #1. Correct Answer c. 2.0 psi less than the pressure upstream of CV #1.
- Disease causing microbiological contaminants in the potable water system are a(n): a. Aesthetic-Health Hazard. b. Low-Health Hazard. c. High-Health Hazard. d. Severe-Health Hazard. Correct Answer c. High-Health Hazard.
- A two valve differential pressure test kit may be used as long as: a. it is approved for use in Washington state. b. it may not be used because all differential pressure test kits have five valves. c. it has been verified for accuracy or calibrated by the water purveyor. d. it has been verified for accuracy and calibrated, if required, within the last 12 months. Correct Answer d. it has been verified for accuracy and calibrated, if required, within the last 12 months.
- What markings must be on all approved backflow prevention assemblies? a. manufacturer, model, serial number, and date manufactured b. manufacturer, direction of flow, size, and installation orientation c. manufacturer, model, direction of flow, and date manufactured d. manufacturer, model, size, and serial number Correct Answer d. manufacturer, model, size, and serial number
- An approved air gap is never less than: a. one inch.
b. two inches. c. twice the diameter of the outlet drain pipe. d. 1 1/2 times the water supply pipe. Correct Answer a. one inch.
- A backflow prevention assembly, appropriate for the degree of hazard, installed at the water meter is called: a. area protection. b. point of use protection. c. fixture protection. d. service protection. Correct Answer d. service protection.
- What is the maximum allowable head loss through an approved double check valve assembly? a. 1 psid b. 10 psi c. 12 psi d. 25 psi Correct Answer b. 10 psi
- What is indicated if, while testing the relief valve of an RPBA, the gauge shows no differential and the relief valve does not vent? a. the relief valve leaks b. the relief valve is stuck closed c. SOV #2 leaks and there is back pressure d. SOV #2 leaks and there is downstream flow Correct Answer b. the relief valve is stuck closed
- What is indicated if water continues to flow from TC #2 while testing the CV on a properly installed PVBA?
backpressure backflow. c. only low hazards and both backsiphonage and backpressure backflow. d. both low- and high-health hazards and only backpressure backflow. Correct Answer c. only low hazards and both backsiphonage and backpressure backflow.
- A direct cross-connection exposes a water system to: a. backpressure only. b. backsiphonage only. c. both backsiphonage and backpressure. d. neither backsiphonage nor backpressure. Correct Answer c. both backsiphonage and backpressure.
- According to certification regulations (WAC 246-292) a certified BAT's duties are to inspect, test, and: a. repair backflow prevention devices. b. repair backflow prevention assemblies. c. monitor backflow prevention devices. d. monitor backflow prevention assemblies. Correct Answer d. monitor backflow prevention assemblies.
- The check valves in a DCVA must be: a. internally loaded and drip-tight in the reverse direction of flow with a minimum of 1 psid. b. externally loaded and drip-tight in the direction of flow with a minimum of 1 psid. c. internally loaded and drip-tight in the direction of flow with a minimum of 1 psid.
d. externally loaded and drip-tight in the reverse direction of flow with a minimum of 1 psid. Correct Answer c. internally loaded and drip-tight in the direction of flow with a minimum of 1 psid.
- An approved RPBA must be shipped assembled from the manufacturer with: a. 2 spring loaded shut-off valves and 4 properly located test cocks. b. 2 quick closing shut-off valves and 4 properly located test cocks. c. 2 hard seated shut-off valves and 4 approved test cocks. d. 2 soft seated shut-off valves and 4 properly located test cocks. Correct Answer d. 2 soft seated shut-off valves and 4 properly located test cocks.
- If testing CV #2 on a DCVA, the needle on the gauge starts to drop after closing SOV#1 and before opening TC #4, which component leaks with flow downstream to the customer? a. SOV # b. SOV # c. CV # d. CV #2 Correct Answer b. SOV #
- While testing an RPBA, if after closing the SOV #2 and the bleed valves on the test kit, the needle on the gauge drops to the lower end and the differential pressure relief valve vents, then: a. CV #1 leaks. b. the relief valve leaks. c. CV #2 leaks. d. CV #2 leaks and SOV #2 leaks and there is backpressure. Correct Answer a. CV #1 leaks.
d SOV #1 leaks and report the psid observed when the Air Inlet Valve opened as the opening point of the Air Inlet Valve Correct Answer b. Check Valve leaks and the psid observed when the Air Inlet Valve opened as the opening point of the Air Inlet Valve
- Which test procedure must be used to test an approved RPBA? a. ASSE series 5000 test procedures b. PNWS/AWWA test procedures c. ABPA test procedures d. USC-FCCCHR field test procedures Correct Answer d. USC- FCCCHR field test procedures The test kit must be purged to rid the: a. hoses and the differential pressure gauge of debris that might be trapped in the test kit. b. test cocks and the gauge of debris that might be trapped in the assembly. c. assembly and hoses of air that might be trapped in the test kit. d. hoses and the differential pressure gauge of air that might be trapped in the test kit. Correct Answer d. hoses and the differential pressure gauge of air that might be trapped in the test kit.
- An actual cross-connection is: a. a physical connection (link) between a potable water system and any system that contains only potable water. b. a physical connection (link) between a potable water system and any system that contains a non-potable substance. c. the impossibility to connect (link) the potable water system to a system that contains a non-potable substance.
d. the possibility to connect (link) the potable water system to a system that contains a potable water. Correct Answer b. a physical connection (link) between a potable water system and any system that contains a non-potable substance.
- An AVB is a special application device with a float check (poppet), check seat, poppet seat, and an air inlet port and if listed is: a. an approved backflow preventer. b. an approved backflow prevention assembly. c. an approved Air Gap. d. NOT acceptable backflow protection of the purveyor's potable water system Correct Answer a. an approved backflow preventer.
- Special application backflow devices may be used as service protection: a. only where there is a low degree of health hazard. b. only when acceptable to the purveyor's CCS where there is a low health hazard. c. only when installed parallel to an approved backflow prevention assembly. d. a special application device may never be used to protect a purveyor's potable water system where an approved backflow prevention assembly is required. Correct Answer d. a special application device may never be used to protect a purveyor's potable water system where an approved backflow prevention assembly is required.
- Approved backflow prevention assemblies must be designed to: a. be disassembled and repaired in line for all sizes. b. Washington State DOH standards. c. ASSE standards.
d. all the above Correct Answer a. Intentionally violates the requirements of certification regulations or any DOH statutes or orders.
- A high-health hazard cross-connection is one which could? a. Improve the quality of potable water and create an actual public health hazard through poisoning or spread of disease by sewage, industrial liquids or waste b. Impair the quality of potable water and create an actual public health hazard through poisoning or spread of disease by sewage, industrial liquids or waste c. Cause an improvement of the quality of potable water to a degree that does not create a hazard to the public health, but does adversely and unreasonably affect the aesthetic qualities of such potable waters for domestic use d. Cause an impairment of the quality of potable water to a degree that does not create a hazard to the public health, but does adversely and unreasonably affect the aesthetic qualities of such potable waters for domestic use Correct Answer b. Impair the quality of potable water and create an actual public health hazard through poisoning or spread of disease by sewage, industrial liquids or waste
- Loss of pressure through an RPBA is caused by: a. closing of the shut-off valves. b. loading the check valves by springs or weights. c. loading the check valves by springs. d. loading the check valves and the relief valve by springs. Correct Answer c. loading the check valves by springs.
- Differential pressure is indicated as: a. psi. b. psia. c. psid. d. psig. Correct Answer c. psid.
- How often are test kits required to be verified for accuracy or calibrated in Washington State? a. Yearly b. Annually c. By January 1st every year d. Only when requested by water purveyors Correct Answer b. Annually
- What is a certified BAT required to do to properly "monitor" backflow prevention assemblies? a. Track backflow assemblies for a minimum of 5 years or for the life of the assembly, whichever is shortest. b. Track backflow assemblies for a minimum of 3 years or for the life of the assembly, whichever is shortest. c. Complete a Backflow Assembly Test Report Form acceptable to the DOH after each test of a backflow prevention assembly. d. Complete a Backflow Assembly Test Report Form acceptable to the local water purveyor after each test of a backflow prevention assembly. Correct Answer d. Complete a Backflow Assembly Test Report Form acceptable to the local water purveyor after each test of a backflow prevention assembly.
