BACKFLOW PREVENTION ASSEMBLY TESTER PRACTICE EXAM- 100% tutor verified 2024-2025, Exams of Advanced Education

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BACKFLOW PREVENTION ASSEMBLY TESTER

PRACTICE EXAM- 100% tutor verified 2024-

The loading of the first and second check valves in a RP is always (A) Less than 1 psid (B) The same (C) Different (D) Maxumun 2 pisd different - answer-Different A total cross connectiom program should be coordinated with (A) Plumbling Insprctor (B) Local Health Dept (C) Water Purveyor (D) All the Above - answer-All the Above Whan testing a DC water continuues to flow the #4 tesrt cock after the use of bleed off assy the most probale cause (A) Fouled #2 check (B) Fouled #1 check (C) Leaking #1 shut off valve (D) Leaking #2 shut off valve - answer-Leaking #2 shut off valve When protected by a atmospheric vacuum breaker a 2" inlet shall be installed at least above the floor level rim of the tank (A) 2" (B) 4" (C) 6 " (D) 12" - answer-6" To properly field test a RP

(A) The #1 shut off valve must be left open (B) The #2 shut off valve must be open position (C) Both shut off valve are in the open position (D) Both shut off valve are in the closed position - answer-The #1 shut off valve must be left open When a relief valve of a RP has intermittent discharge the most probabie is (A) #1 shut off valve leaks by (B) Relief valve is stuckl closed (C) #2 shut off is open (D) Supply line pressuer fluctuations - answer-Supply line pressuer fluctuations The safe drinking water act of 1974 as amended in 1986 places the primary responsibility for water quality of the publie water supply on which of the following (A) Customer (B) Water Purveyor (C) Contractor (D) Backflow Tester - answer-Water Purveyor When testing a RP a differenitial pressure gauge is used to determine the difference between (A) The water pressure at #1 test cock and #4 test cock (B) The water pressure at #2 test cock and #4 test cock (C) The high side pressure and low side pressure (D) The high side pressure and gauge pressure - answer-The high side pressure and low side pressure While observing a RP the relief valve spits intermitently from the relief valve what in the probable cause (A) #1 shut off leaking by (B) Fouled relief vakve (C) Pressure fluctuations (D) Backpressure - answer-Pressure fluctuations

How many test cocks are on SVB (A) 2 (B) 1 (C) 4 (D) 3 - answer- Water continuosly leaking from test cock #2 w hile testing the check valve of a PVB is probavly caused by a leaking (A) Air inlet (B) Test cock # (C) Shut off valve # (D) Shut off valve #2 - answer-Shut off valve # When Testing a backflow assembly the first step is (A) Flush test cock (B) Attach test gauge hoses (C) NIIO (D) Close gauge needle valves - answer-NIIO A link between a potable watrer supply and a non-potable watrer supply is a (A) Air Gap (B) Barometric Loop (C) Cross Loop (D) Cross Connection - answer-Cross Connection The accuracy of field test gauges should be checked (A) After every test (B) Annualiy

(C) Monthiy (D) Upon purchase of the gauge - answer-Annualiy When field testing a DC the #2 check valve is found to be leakingthe next step is to (A) Repair #1 shut off valve (B) Repair #2 check valve (C) Do notining (D) Repace the entire assembly - answer-Repair #2 check valve An AVB must be installed (A) 6" above the highesrt outlet all downstream piping (B) 6 times the pipe diameter above the highest point of use (C) 12" above the highesrt outlet all downstream piping (D) 2.31 feet above point of use - answer-6" above the highesrt outlet all downstream piping A health hazard is commonly referred to as (A) A poison (B) A contaminant (C) A pollutant (D) Lethal - answer-A contaminant After repairing RP the assembly is restored to proper operation and the relief valve continuousiy dumps what is the most probabie caues (A) Fouied #1 check (B) Leaking #2 shut off (C) Springs installed in the wrong checks (D) A or C - answer-A Fouied #1 check or C Springs installed in the wrong checks Containment backflow prevention is meant to protect

(A) A boiler (B) A irrigation system (C) A public water supply (D) A chill water system - answer-A public water supply Who has the primary responsibility for preventing water from unapproved from entering the public water supply (A) Consumer (B) Plumber (C) Water Purveyor (D) Heaith Dept - answer-Water Purveyor When fieid testing the RP the test cocks should be flushed in what order (A) Open 1,2,3,4 then close 1,2,3, (B) Open 4,3,2,1 then close 1,2,3, (C) Open 1,2,3,4 then close 4,3,2, (D) They should not be flushed - answer-Open 4,3,2,1 then close 1,2,3, A tarm that describes the quality of water that is respect to taste and odor but does not constitule a heaith hazard is (A) Toxic (B) Pollutant (C) Backsiphonage (D) Conataminant - answer-Pollutant When restoring service to the customer after testing the DC the shut off valves are opened (A) Slowly #1 shut off valve first (B) Slowly #2 shut off valve first (C) Quickly #1 shut off valve first

(D) Quickly #2 shut off valve first - answer-Slowly #1 shut off valve first Internal protection refers to (A) Backflow device at the meter (B) Backflow device at the point of use (C) Health hazard conneclion (D) Non-health hazard conneclion - answer-Backflow device at the point of use A leaking #2 check valve in a RP with backpressure may cause (A) Pressure regulator damage (B) Disc compression (C) Reilef valve discharge (D) #1 check valve to open - answer-Reilef valve discharge Each of the check valves in the DC is designed to hold in the direction of flow a minimun static pressure of (A) 1.0 psid (B) 2.0 psid (C) 3.0 psid (D) 5.0 psid - answer-1.0 psid When field testing a DC and the #1 check reading is zero (A) You must test the #2 check valve (B) You can test the #2 check before repairing the #1 check (C) You must repair #2 check before testing the #1 check

(D) You can test the #1 check before repairing the #2 check - answer-You can test the #2 check before repairing the #1 check An atmospheric vauum breaker may have downstream shut off valve (A) When located 12" aove the flood level rim (B) When a reilef valve is installed downstrem (C) Under no circumstances (D) if the shut off valve closing - answer-Under no circumstances Which of the following assemblies contains an independently operating internally loaded check valve and independently operating loaded air inlet valve located on the discharge side of the check (A) AVB (B) DC (C) PVB (D) RP - answer-PVB A major concern of the water purveyor a auxilliary water is utilized is (A) Backflow protection at the water meter (B) The auxilliary water supply is tested (C) The auxilliary water supply is treated (D) The auxilliary water supply pressure is lower the publlc water supply - answer-Backflow protection at the water meter An absolute pressure of 25 psia is equal to approximately what value in gauge pressure ( PSIG ) (A) 5 psig (B) 10 psig

(C) 15 psig (D) 25 psig - answer-10 pisg What is the primary cause of the reversal of flow of water in a piping system (A) the length of the piping system (B) low flow conditions (C) The reversal of a pump (D) The loss of pressure in a system - answer-The loss of pressure in a system What type of protection is provided by a Barometric Loop (A) Backpressure (B) An atmospheric break (C) Backsiphonage (D) Backpressure and Backsiphonage - answer-Backsiphonage During the field test of a leaking #2 valve on a Rp pressure is bypassed througt the gauge from #2 test cock to the #4 test cok this procedure will (A) Give the actual pressure drop aross #2 check valve (B) Caues the differential pressure reading to drop and the relief to open (C) compensate for a leaking #1 shut off valve (D) Show a inaccurate prssure drop acrss #1 check valve - answer-Caues the differential pressure reading to drop and the relief to open The physical operation of hose bibb vacuum breaker is classified as a type of (A) AVB

(B) RP

(C) Dual check with intermediate vent (D) Pressure relief valve - answer-AVB The relief valve opening point on a RP must be at or above (A) 1.0 psid (B) 2.0 psid (C) 3.0 pisd (D) Greater than 5.0 psid - answer-2.0 psid An air gap muct have (A) Two times the pipe diameter (B) A 2" seqaration at flood level rim (C) Two times the fill pipe diameter what a minimum 1" separation (D) A maximun of 1" above the overflow rim - answer-Two times the fill pipe diameter what a minimum 1" separation When testing the RP the high hose is attached to #2 test cock and low side hose is attached to the # test cock the needle on the gauge will indicate (A) No Differential (B) 15 psid (C) The apparent static pressuer across #1 check (D) The opening point of the relief valve - answer-The apparent static pressuer across #1 check The following absolute pressure could cause backsiphonage to occur in hydraulic system (distribution sysem) at sea level

(A) 10.5 psia (B) 15.0 psia (C) 33.9 psia (D) 100 psia - answer-10.5 psia The maximum allowabie pressure loss in the direcction of flow in a DC is (A) 2.31 psi (B) 10 psi (C) 14.7 psi (D) 0.433 psi - answer-10 psi In responding to a backflow incident the water purveyor should (A) Call the mayor (B) Implement the emergency response plan (C) Install a vacuum breaker (D) Develop a good excuse - answer-Implement the emergency response plan A mixture of air and gas is considered hazardous when the mixture exceeds what percentage of gthe lower explosive limit (A) 0% (B) 3% (C) 7% (D) 10% - answer-10% To exert a pressure of 1.0 psi at base of a water column the column would have to be (A) 4.34 high (B) 14.7 high (C) 27.75 high

(D) 33.89 high - answer-27.75 high A DC must be tested (A) Upon installation (B) Every 6 month (C) Annually on a health hazard (D) none of the above - answer-Upon installation An absolute perssure of 25 psiaa (at sea level) is equal to approximately (A) 5 psi (B) 10 psi (C) 20 psi (D) 25 psi - answer-10 psi Dueing a field test the air inlet on PVB must open at (A) Above 2.0 psid (B) Below 1.0 psid (C) Above 1.0 psid (D) Below 2.0 psid - answer-Above 1.0 psid A differential pressuer gauge is used to field test (A) PVB's (B) Dual Checks (C) AVB's (D) All the above - answer-PVB's Backflow in a water supply can be caused by (A) Backpressure only (B) A Barometric Loop

(C) Backsiphonage only (D) Backpressure and Backsiphonage - answer-Backpressure and Backsiphonage A BPAT tester is required to report test information on the proper forms to the (A) Administrative authority (B) Manufacturer's Rep (C) EPA (D) None of the above - answer-Administrative authority The relief valve opens when closing #2 shut off valve on a RP What is the most probable cause (A) #1 Shut off valve is open (B) #2 Shut off valve is open (C) #1 check is fouled open (D) Shut off is leaking - answer-#1 check is fouled open When field testing the #1 Check of a RP the differential pressurw shouid be (A) Greter than or equal to 5.0 psid (B) 3.0 psid greater than the relief valve opening point (C) 1.0 psid in the directiom of flow (D) Less than 5.0 psid - answer-Greter than or equal to 5.0 psid When testing a SVB what is the firsrt test being performed (A) The air inlet opening point (B) The static pressure across the check valve (C) To verify the #2shut off hold tight (D) To check if the SVB hold water - answer-The static pressure across the check valve When testing a PVB the air inlet opens upon closing the #1 shut off valve What is the most probable cause

(A) Leaking #2 shut off valve (B) Leaking #1 shut off valve (C) Fouied air inlert (D) Fouied check valve - answer-Leaking #2 shut off valve A 2" AVB when used on irrigation systemsterm-15 shall be instilled (A) 6" above all downstream piping (B) 18" above all downstream piping (C) 24" above all downstream piping (D) 27 3/4" above all downstream piping - answer-6" above all downstream piping What causes the relief valief valve to close on a RPZ? (A) Reilef valve spring pressure (B) Supply side water pressure (C) Pressure differential between Check #1 and Check # (D) All the above - answer-Supply side water pressure When testing a RP instialled in vauil the relief valve opening point falls to zero What is most probabie cause (A) The relief valve is stuck shut (B) #1 check is fouled (C) the #2 shut off leaks by (D) Installed improperly - answer-Installed improperly When field testing the DC the #1 check static differential pressure is found to be 0.0 psid What is the most probable cause (A) Fouied #2 Check (B) Leaking #2 shut off (C) Fouled #1 check

(D) Leaking #1 shut off - answer-Fouled #1 check The critical level for checking the air inlet of the PVB is (A) At the air inlet (B) At #1 shut off (C) At #1 test cock (D) At #2 shut off - answer-At the air inlet The physical operation of a Hose Bibb Vacuum Breaker is classified as a type of (A) Dual check valve (B) Atmospherlc vacuum breaker (C) Pressure vacuum breaker (D) Doubie check backflow preventer - answer-Atmospherlc vacuum breaker An oxygen deficient atmosphere has less than what precentage of oxygen (A) 19.50% (B) 10% (C) 21% (D) 24% - answer-19. The relief valve of a RP discharges in flow and non-flow condition What is the most probable cause (A) Fouied #1 check (B) Fouied #2 check (C) Fouied relief valve (D) Line pressure fiuctuation - answer-Fouied relief valve A PVB may be installed with (A) A pump downstream (B) A water heater downstream

(C) A shutoff valve downstream (D) An eievated storage tank downstream - answer-A shutoff valve downstream The relief valve of a Reduced Pressure Principle Assmbly remains closed during normal operation due to (A) Supply side pressure (B) The relief valve spring (C) Zone pressure (D) All the above - answer-The relief valve spring What would cause a continual flow of water from of water the air inlet of a PVB prior strting the field test (A) #2 shut off leaking by with baclpressure (B) Fouled ckeck valve (C) #1 shull off leaking by (D) Fouled air inlet - answer-Fouled air inlet A PVB can be installed in the following conditions (A) Backpressure (B) Backsiphonage (C) B and D (D) Pollutants and Contaminants - answer-B Backsiphonage and D Pollutants and Contaminants When testing the check valve ob a SVB the water will not stop flowing What is the most probabie cause (A) #2 shut off valve leaks by (B) #1 shut off valve leaks by (C) check valve is fouled (D) None of the above - answer-#1 shut off valve leaks by Which of the following could cause a closed system if installed in the sevice line

(A) Hose bibb (B) Backflow Prevention Assembly (C) venturi (D) T & P valve - answer-Backflow Prevention Assembly The critical level when testing the SVB is (A) At the air inlet (B) At the #1 shutoff valve (C) At the vent screw (D) there is on critical level - answer-At the vent screw During the test of the check valve on a Pvb water continues to flow from the #2 test cock What is the most probabie (A) Leaking #1 shut off valve (B) Fouied air inlet (C) Fouied ckeck valve (D) Incorrect test procedure - answer-Leaking #1 shut off valve Which of the following backflow assmblies are allowable for use against a contaminant when the backflow could be caused by backpressure (A) Atmospheric vacuum breaker (B) Doubie check valve assembly (C) Pressure vacuum breaker assembly (D) Redued pressure backflow assembly - answer-Redued pressure backflow assembly

While testing a backflow device under the influence of direct cross connection it is observed that the hazard preset is a pollutant Which assembly is appropriate for protection (A) AVB , PVB , Air Gap (B) RP , DC , SVB (C) Air Gap , RP , DC (D) Barometric Loop - answer-Air Gap , RP , DC How many test cocks are required on a RP (A) 1 (B) 2 (C) 3 (D) 4 - answer- What is the primary consideration when deciding whether ro install a DC or a RP (A) Available space (B) Cost (C) Degree of hazard (D) Available of a floor drain - answer-Degree of hazard A perfect vacuum at sea level will raise the water level in the pipe maximum of (A) 14.7 feet (B) 2.31 feet (C) 33.9 feet (D) 23.1 feel - answer-33.9 feet

An undersized water supply line carrying water at a high velocity (A) Creates high pressure (B) Creates no problem at all (C) May cause backsiphonage due to the aspirator effect (D) May cause backpressure - answer-May cause backsiphonage due to the aspirator effect A PVB may be used for backflow protection for the following conditions (A) Backpressure non-health hazard (B) Backpressure health hazard (C) Backsiphonage health hazard (D) All the above - answer-All the above The safe Drinking water act of 1974 as amended in 1986 authorizes who to set national health based standards for drinking water (A) TCEQ (B) US EPA (C) Water Purveyor (D) Congress - answer-US EPA Ater closing the #2 shit off while testing a RP the relief valve dumps What is the most probable cause (A) #1 check is fouled (B) #2 check is fouled (C) Reilef valve is fouled open (D) #2 check is fouled - answer-#1 check is fouled

Containment Protection (A) Protects all consumers on a public water system (B) Offers no protection to individuals within a facility (C) Prevents backsiphonage only (D) All of the above - answer-Protects all consumers on a public water system Hose bibb vacuum breakers should be installed (A) On hose bibb as requireed by code (B) Below grade (C) Where backpressure may be present (D) On outside hose bibbs only - answer-On hose bibb as requireed by code To test the #2 check of a RP for tightness aginst backpressure which test kit control vaves must be open (A) High and Low (B) High and Bypass (C) Low and Bypass (D) High and Low and Bypass - answer-High and Bypass During the fleld test of the check valve of a PVB the high bleed needlie valve is left open This will (A) Reduce the pressure bet ween the check valve and the #1 shut off valve (B) Provide the necessary resultd for test (C) Have no effect because the needle valve is used to bleed air only (D) Increase the differential pressure - answer-Reduce the pressure bet ween the check valve and the # shut off valve

The spring in the relief valve of a RP is designed to (A) Close the relief valve (B) Assist the supply suide pressure (C) Open the relief valve (D) Increase the differential pressur across the #1 check valve - answer-Open the relief valve The two types of cross connections are (A) Direct and Indirect (B) Static and Dynamic (C) Temporary amd Permanent (D) Direct and Pressurized - answer-Direct and Indirect How many test cocks are on PVB (A) 4 (B) 2 (C) 1 (D) 3 - answer- The maximum distance that a absolute vacuum at sea level can lift a column of water is (A) 2. (B) 4. (C) 14. (D) 33.9 - answer-33. An unprotected bypass around a RP is

(A) Allowed when the device needs repair (B) Allowed when service cannot be interupted (C) Not allowed (D) Allowed for servicing hospitals only - answer-Not allowed When fleid testing the RP what would be observed if the #2 check was fouled (A) NO differential and no discharge from the relief valve (B) NO differential and discharge from the relief valve (C) Differential pressure and no discharge from the relief valve (D) Differential pressure and discharge from the relief valve - answer-Differential pressure and discharge from the relief valve What device is used to compensate for a leaking shut off valve when testing a DC assy (A) Stie tube (B) Differential Gauge (C) Bleed off assembly (D) Screw Driver - answer-Bleed off assembly How many test cocks are on PVB (A) 1 (B) 3 (C) 2 (D) 4 - answer-2 Any pressure less than that exerted by the atmosphere is defined as

(A) Slphon (B) Vacuum (C) Backflow (D) Absolute Pressure - answer-Vacuum Check Valve of double check backflow assy's must be (A) Spring loaded (B) Internally loaded (C) A gravliy closung type (D) A ciapper type - answer-Internally loaded A confined space is defined as a space with which of the following characteristics (A) Limited openings for entry and exit (B) Cramped work area (C) Varied lighting (D) Poor access - answer-Limited openings for entry and exit A reduced pressure principle assembly is not required at service connection of this facility (A) Car wash (B) Sewage Treatment Plant (C) Plating Plant (D) A singie family dwelling - answer-A singie family dwelling when entering a confined space to test a backflow assmembly the tester should

(A) Send in the hriper flrst (B) Have permission from the watrer purveyor (C) Check the quality of the atmosphere befoe entering (D) None of the above - answer-Check the quality of the atmosphere befoe entering When testing the first check of a DC the site tube goes empty what is the most probable cause (A) Leaking #1 shiut off valve (B) Leaking #2 shiut off valve (C) Leaking #2 check (D) B and C - answer-Leaking #2 shiut off valve and Leaking #2 check While testing check valve #2 of a RP under backpressure what would be observed if the second if the second check valve was fouled (A) NO differential and no discharge from the relief valve (B) NO differential and discharge from the relief valve (C) Differential pressure and no discharge from the relief valve (D) Differential pressure and discharge from the relief valve - answer-Differential pressure and discharge from the relief valve Backflow Preventer assy test reports are required to be kept on file (A) 2 months (B) 1 year (C) 3 years (D) 5 years - answer-3 years When testing the SVB the gauge goes to zero upon closing the #1 shut off valve what is the most probable cause

(A) The #2 shut off lwak by (B) The check valve is fouled (C) The air inlet does not work (D) #1 shul off valve leak by - answer-The check valve is fouled How long is the backflow test report required by law to be maintained by the water purveyor (A) 2 months (B) 1 year (C) 3 years (D) 5 years - answer-3 years