Backflow Final questions with accurate answers
A backflow preventer check valve must close tight when subject to any
backflow conditions
True
False Ans✓✓✓ True
A carbonated beverage machine requires a backflow preventer for
beverage dispensing equipment (asse 1022) this protection is needed due
to the potential
Chemical reaction
Increased acidity of the water
Decrease ph level
Low hazard Ans✓✓✓ Chemical reaction
A Double Check Backflow Prevention Assembly (asse 1015) is made up
of
One check valve and two shutoff valves
,Two check valves and two shutoff valves
One shutoff valve one relief valve and one check valve
Two check valves two shutoff valves and one relief valve Ans✓✓✓
Two check valves and two shutoff valves
A double check backflow prevention assembly (asse 1015) test and
maintenance report shall include all of the following information except
Address of instillation
Serial number of assembly
Test results of a check valve number one
Differential pressure relief valve discharging Ans✓✓✓ Differential
pressure relief valve discharging
A double check detector fire protection backflow prevention assembly
(asse 1048) contains one
Air inlet valve
,Strainer
Flow meter/indicator
Pressure regulating valve Ans✓✓✓ Flow meter/indicator
A high hazard classification includes which if the following
Radioactive waste
Raw sewage
Caustic soda
All the above Ans✓✓✓ All the above
A pressure gauge reading of 50 psi at the base of a column of water
would indicate that the column was approximately ________ feet high
21.5
43.3
, 50
115.5 Ans✓✓✓ 115.5
A pressure vacuum breaker assembly's (asse 1020) shutoff valves
Are installed at the inlet of the assembly side only
Are not used during a field test procedure
Contain an inlet test cock on all assemblies
Are located at the inlet and outlet of all assemblies Ans✓✓✓ Are
located at the inlet and outlet of all assemblies
A primary cause of reversal of flow of water in a piping system is
The length of the piping system
Low flow conditions
The size of the pipe
A backflow preventer check valve must close tight when subject to any
backflow conditions
True
False Ans✓✓✓ True
A carbonated beverage machine requires a backflow preventer for
beverage dispensing equipment (asse 1022) this protection is needed due
to the potential
Chemical reaction
Increased acidity of the water
Decrease ph level
Low hazard Ans✓✓✓ Chemical reaction
A Double Check Backflow Prevention Assembly (asse 1015) is made up
of
One check valve and two shutoff valves
,Two check valves and two shutoff valves
One shutoff valve one relief valve and one check valve
Two check valves two shutoff valves and one relief valve Ans✓✓✓
Two check valves and two shutoff valves
A double check backflow prevention assembly (asse 1015) test and
maintenance report shall include all of the following information except
Address of instillation
Serial number of assembly
Test results of a check valve number one
Differential pressure relief valve discharging Ans✓✓✓ Differential
pressure relief valve discharging
A double check detector fire protection backflow prevention assembly
(asse 1048) contains one
Air inlet valve
,Strainer
Flow meter/indicator
Pressure regulating valve Ans✓✓✓ Flow meter/indicator
A high hazard classification includes which if the following
Radioactive waste
Raw sewage
Caustic soda
All the above Ans✓✓✓ All the above
A pressure gauge reading of 50 psi at the base of a column of water
would indicate that the column was approximately ________ feet high
21.5
43.3
, 50
115.5 Ans✓✓✓ 115.5
A pressure vacuum breaker assembly's (asse 1020) shutoff valves
Are installed at the inlet of the assembly side only
Are not used during a field test procedure
Contain an inlet test cock on all assemblies
Are located at the inlet and outlet of all assemblies Ans✓✓✓ Are
located at the inlet and outlet of all assemblies
A primary cause of reversal of flow of water in a piping system is
The length of the piping system
Low flow conditions
The size of the pipe
