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BACKFLOW PREVENTION ASSEMBLY BPAT
TESTER EXAM LATEST ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)
An air gap separation is measured from the outlet of the discharge pipe, to the: A) fixture drain plug B) inlet of the supply C) level of the liquid D) flood level rim E) none of the above Correct Answer d) flood level rim The minimum type of containment protection for a non-health hazard, non-chemical fire sprinkler system is a(n): A) atmospheric vacuum breaker B) double check detector assembly backflow preventer C) pressure vacuum breaker assembly D) reduced pressure detector assembly E) all of the above Correct Answer b) double check detector assembly backflow preventer The type of protection required for a closed loop heating system containing chemicals is: A) reduced pressure principle assembly B) double check valve assembly C) pressure vacuum breaker assembly D) dual check valve type backflow preventer
E) all of the above Correct Answer a) reduced pressure principle assembly For containment protection in a non-health hazard situation, the minimum protection required shall be: A) reduced pressure principle backflow preventer B) two (2) single check valves in series C) double check backflow prevention assembly D) atmospheric vacuum breaker E) none of the above Correct Answer c) double check backflow prevention assembly Water continuously leaking from test cock #2 during a test procedure of a pressure vacuum breaker assembly is probably caused by a leaking: A) air inlet valve B) test cock # C) inlet shut-off valve # D) outlet shut-off valve # E) test cock #2 Correct Answer c) inlet shut-off valve # The required backflow prevention assembly for a fire suppression system containing chemicals is: A) reduced pressure detector assembly or reduced pressure principle assembly B) double check detector assembly or double check backflow prevention assembly C) pressure vacuum breaker assembly D) dual check valve type backflow preventer E) none of the above Correct Answer a) reduced pressure detector assembly or reduced pressure principle assembly
D) pressure vacuum breaker assembly E) none of the above Correct Answer a) reduced pressure principle assembly The type of protection associated with an air gap separation is: A) backsiphonage - non-health hazard B) backsiphonage - health hazard C) backpressure - non-health hazard D) backpressure - health hazard E) all of the above Correct Answer e) all of the above The application of a pressure vacuum breaker assembly is for: A) backpressure and isolation B) backsiphonage and isolation C) backpressure or backsiphonage and isolation D) containment only E) none of the above Correct Answer b) backsiphonage and isolation How many pounds of pressure per square inch are exerted at the base of a column of water that is two (2) feet tall? A) 0. B) 0. C) 0. D) 1. E) 1.44 Correct Answer c) 0. A pressure of 75 psi would be equivalent to what _________ head of water? A) 37.5 feet B) 75.0 feet
C) 115.0 feet D) 150.0 feet E) 173.2 feet Correct Answer e) 173.2 feet A pressure gauge installed at the bottom of an open tank, containing water ten (10) feet deep, would indicate what pressure reading? A) 4.3 psi B) 8.6 psi C) 12.2 psi D) 14.7 psi E) 16.9 psi Correct Answer a) 4.3 psi What equipment is used to test a pressure vacuum breaker assembly? A) atmospheric vacuum gauge B) duplex gauge C) differential pressure gauge D) pair of bourbon gauges E) forty-two inch sight tube Correct Answer c) differential pressure gauge Test cock number __________ may be opened to establish flow through a backflow prevention assembly: A) one (1) B) two (2) C) three (3) D) four (4) E) all the above Correct Answer d) four (4)
The critical final step in testing a backflow prevention assembly is: A) removing the test cock adapters B) returning the assembly to normal operating condition C) recording the test results D) removing the gauges E) making out the bill Correct Answer b) returning the assembly to normal operating condition The differential pressure relief valve on a reduced pressure principle backflow assembly must open before the differential pressure across the inlet check valve drops below: A) 1.0 psid B) 1.5 psia C) 2.0 psid D) 2.5 psig E) none of the above Correct Answer c) 2.0 psid The minimum hose diameter for a pressure differential gauge is ________ inch: A) 1/ B) 1/ C) 3/ D) 1/ E) 3/4 Correct Answer b) 1/ What are the minimum scale increments allowed on differential pressure gauges used for testing backflow prevention assemblies and devices? A) 0.1 psia B) 0.2 psid
C) 0.5 psig D) 1.0 psid E) 2.0 psia Correct Answer b) 0.2 psid What valve must be closed when testing a reduced pressure principle backflow assembly? A) number one (1) shut-off valve B) service connection valve C) pressure regulating valve D) flow control valve E) number two (2) shut-off valve Correct Answer e) number two (2) shut-off valve An occasional discharge from the relief valve of a reduced pressure principle backflow preventer usually indicates: A) a leaking number one (1) check valve B) a leaking number two (2) check valve C) a malfunction in the relief valve D) the device is working properly E) an improper installation Correct Answer d) the device is working properly If the check valve springs are interchanged on a double check valve assembly, the assembly: A) will not protect against backflow B) will create a significant pressure drop C) will not be adversely affected by the interchange D) will malfunction due to the interchange E) will create a static condition Correct Answer c) will not be adversely affected by the interchange
E) downstream shut-off valve Correct Answer d) air inlet valve A check valve in an approved backflow prevention assembly, must be drip tight when: A) the assembly is subject to any backflow B) the supply pressure is increased C) the number one (1) shut-off valve is closed D) the test cocks are open E) there is any attempted water usage Correct Answer a) the assembly is subject to any backflow A leaking check valve may be caused by a: A) dirty or damaged check disc B) damaged check seat C) broken or damaged spring D) guide members hanging up E) all of the above Correct Answer e) all of the above Test cock number one (1) of an approved double check valve assembly, is located: A) downstream of shut-off valve number one (1) B) downstream of shut-off valve number two (2) C) up stream of shut-off valve number one (1) D) between the number one (1) and number two (2) check valves E) upstream of the discharge port Correct Answer c) up stream of shut-off valve number one (1) On an approved pressure vacuum breaker assembly, the shut-off valves: A) are installed at the inlet of the assembly only B) are not used during a field test procedure
C) are installed at the outlet of the assembly only D) contain an inlet test cock on all assemblies E) are located at the inlet and outlet of all assemblies Correct Answer e) are located at the inlet and outlet of all assemblies Test cock number one (1) on a small (3/4" - 2") pressure vacuum breaker assembly, is located between the check valve and the: A) air inlet valve B) inlet valve cover C) shut-off valve number one (1) D) shut-off valve number two (2) E) test cock number two (2) Correct Answer c) shut-off valve number one (1) Test cock number two (2) on a pressure vacuum breaker assembly is located between the air inlet valve and the: A) downstream check valve B) inlet shut-off valve number two (2) C) test cock number one (1) D) outlet shut off valve number two (2) E) upstream check valve Correct Answer e) upstream check valve When testing with a differential pressure gauge, a pressure vacuum breaker assembly air inlet valve, water pressure is bled through the: A) inlet shut-off valve number one (1) B) outlet shut-off valve number two (2) C) test cock number one (1) D) differential gauge E) air inlet valve Correct Answer d) differential gauge
E) health hazard - backpressure Correct Answer c) non-health hazard - backpressure and backsiphonage How many inches must an atmospheric vacuum breaker be installed above all downstream piping and highest opening? A) six (6) B) nine (9) C) twelve (12) D) eighteen (18) E) one (1) Correct Answer a) six (6) An atmospheric vacuum breaker is installed to protect against: A) backpressure - non-health hazard conditions only B) backpressure - health hazard conditions only C) backsiphonage - non-health hazard conditions only D) backsiphonage - health hazard conditions only E) backsiphonage - health hazard or non-health hazard conditions Correct Answer e) backsiphonage - health hazard or non-health hazard conditions The term "approved reduced pressure principle assembly", applies to an assembly with two shut-off valves, four test cocks and: A) two check valves and an air inlet valve B) two approved check valves and an air inlet valve C) two approved check valves and a pressure relief valve D) two approved check valves and a differential pressure relief valve E) two approved check valves and a pressure regulating valve Correct Answer d) two approved check valves and a differential pressure relief valve
It is required that the test gauge be tested for accuracy at least: A) monthly B) quarterly C) semi-annually D) annually E) at the time of purchase and prior to each use for testing Correct Answer d) annually Undersized water piping carrying water at high velocity can cause backsiphonage due to: A) the vacuum effect B) the pivot effect C) the marginal effect D) the aspirator effect E) the velocity effect Correct Answer d) the aspirator effect Test cocks are flushed for the following reason(s): A) to determine flow through the device B) to protect the test gauges from damage C) to remove lodged foreign material D) to determine that the test cocks are not plugged E) all of the above Correct Answer e) all of the above The relief valve of a reduced pressure principle backflow assembly is internally loaded to: A) reduce the incoming pressure B) force the number two (2) check valve to open C) force the relief valve to open D) force the number one (1) check valve to open E) force the relief valve to close Correct Answer c) force the relief valve to open
E) by installing a strainer upstream of the assembly Correct Answer b) by installing a soft seat check valve upstream of the assembly The term copper poisoning results from: A) the chemical reaction of copper piping materials to contaminated water B) the chemical reaction of copper piping materials to plastic pipe C) the chemical reaction of copper piping materials to polluted water D) the chemical reaction of copper piping materials to co E) none of the above Correct Answer d) the chemical reaction of copper piping materials to co Psig is equivalent to: A) psia plus atmospheric pressure B) the pressure on a psia gauge, above or below atmospheric pressure C) the pressure on a psia gauge, above sea level D) psia minus atmospheric pressure E) none of the above Correct Answer d) psia minus atmospheric pressure A small hole in the underground potable water distribution system may: A) reduce the incoming pressure significantly B) allow contamination of the system from backsiphonage backflow C) create backpressure backflow D) increase the system pressure E) cause the distribution system pumps to siphon air Correct Answer b) allow contamination of the system
It is possible to compensate for a leaking number two (2) shut-off valve during the field test procedure of a reduced pressure principle backflow preventer by attaching a temporary bypass hose from: A) number one test cock to number three (3) test cock B) number two (2) test cock to number four (4) test cock C) number two (2) test cock to the angle stop of the first upstream fixture D) number one (1) test cock to number four (4) test cock E) number three (3) test cock to number four (4) test cock Correct Answer d) number one (1) test cock to number four (4) test cock Edible syrup introduced into a water system through a cross- connection would be an example of: A) a nuisance B) a health hazard C) a non-health hazard D) the venturi effect E) contamination hazard Correct Answer c) a non-health hazard All of the following could create a closed loop piping system except a: A) pressure relief valve B) gate valve C) dual check valve type backflow preventer D) double check valve backflow prevention assembly E) ball valve with an integral test port on the outlet side of the valve Correct Answer a) pressure relief valve Point of use backflow prevention is defined as:
A spill resistant vacuum breaker (svb) is a modified: A) double check backflow prevention assembly B) reduced pressure principle backflow assembly C) pressure vacuum breaker assembly D) air gap separation E) atmospheric vacuum breaker Correct Answer c) pressure vacuum breaker assembly The minimum vertical distance between the relief valve discharge port of a reduced pressure principle backflow assembly and the floor plane is: A) six (6) inches B) twelve (12) inches C) eighteen (18) inches D) twenty-four (24) inches E) thirty (30) inches Correct Answer b) twelve (12) inches The minimum requirement for an approved air gap separation shall be at least: A) one half the diameter of the supply pipe B) six (6) inches above the outlet of the supply pipe C) twice the diameter of the supply pipe, but not less than one (1) inch D) twelve (12) inches above the surrounding ground or floor E) that recommended by the manufacturer of the physical air gap Correct Answer c) twice the diameter of the supply pipe, but not less than one (1) inch The type of protection provided by a barometric loop is: A) prevents backpressure backflow B) it provides an atmospheric break
C) prevents backsiphonage backflow D) prevents backpressure and backsiphonage backflow E) that it ensures the required pressure drop downstream of the loop Correct Answer c) prevents backsiphonage backflow The proper installation of an atmospheric vacuum breaker on an irrigation system would permit the downstream piping to be elevated above the atmospheric vacuum breaker, provided: A) there are no control valves downstream B) the sprinkler heads are at least six (6) inches below the avb C) a hose bib is installed downstream to drain the piping D) a shut-off valve is installed downstream, prior to the sprinkler heads E) this is never an acceptable practice Correct Answer e) this is never an acceptable practice Every vacuum breaker is designed to: A) prevent atmosphere from entering the downstream system B) prevent backsiphonage backflow C) prevent backpressure backflow D) prevent backsiphonage and back-pressure backflow E) promote and allow siphonage under any condition Correct Answer b) prevent backsiphonage backflow An unprotected bypass around a backflow prevention assembly or device: A) is considered to be a cross-connection and is never permitted B) must be within three (3) feet of the device to allow inspection C) must be equipped with a swing or spring loaded check valve D) must be of an equivalent pipe size
