NJ Black Seal Low Pressure, 1 of 3, NJ Black Seal Low Pressure, 2 of 3, NJ Black
Seal Low Pressure, 3 of 3
NJ BLACK SEAL LOW PRESSURE, 1 OF 3, NJ BLACK SEAL LOW
PRESSURE, 2 OF 3, NJ BLACK SEAL LOW PRESSURE, 3 OF 3
NEWEST 2025/2026 COMPLETE ALL QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW VERSION!
A boiler operator log must be maintained in a boiler room containing over: -
ANSWER-100 horsepower
If a flame sensing device notices that there is a flame failure, what device does it
secure? - ANSWER-fuel solenoid valve
What type of draft has a fan between the boiler and the chimney? - ANSWER-
induced
What is used to control alkalinity? - ANSWER-caustic soda
What is the best way to decide the blowdown frequency for a boiler? - ANSWER-
boiler water analysis
What device is used to obtain sufficient static head for the returning condensate
in a two-pipe gravity return system? - ANSWER-return trap
1|Page
, NJ Black Seal Low Pressure, 1 of 3, NJ Black Seal Low Pressure, 2 of 3, NJ Black
Seal Low Pressure, 3 of 3
What is the maximum temperature a hot water boiler can be to qualify in New
Jersey as low pressure? - ANSWER-250 degrees
What type of boiler is an HRT (horizontal return tube)? - ANSWER-fire-tube
What is the purge cycle in a boiler meant to do? - ANSWER-remove combustible
gases
Which valve is allowed between the boiler and safety valve? - ANSWER-no valve
Which is a common type of feedwater regulator in a low pressure plant? -
ANSWER-pressure sensitive device
When open, an OS&Y (outside stem & yoke) valve offers ----- to the flow of steam.
- ANSWER-no resistance
What section of the ASME code do hot water heating boilers fall under? -
ANSWER-Section IV
Which describes the combustion chamber of a serpentine tube heating boiler? -
ANSWER-located below the tubes
What should you do if you walked into a boiler room and the safety valves were
popped? - ANSWER-secure the fire at the burner
2|Page
, NJ Black Seal Low Pressure, 1 of 3, NJ Black Seal Low Pressure, 2 of 3, NJ Black
Seal Low Pressure, 3 of 3
What letter stamp denotes a low pressure boiler? - ANSWER-H
In NJ, how often should boilers over 100 horsepower be inspected internally &
externally? - ANSWER-annually
The basic function of an automatic feedwater regulator on a boiler is to: -
ANSWER-maintain proper water level
If a one square inch column of water is one foot tall, how much does it weigh? -
ANSWER-.433 lbs
Where is the flame sensing device located on a boiler? - ANSWER-front
Cracking of the boiler metal can be caused by: - ANSWER-caustic embrittlement
How would you test the operation of the flame failure device? - ANSWER-by
shutting off the fuel supply valve
Where are the combustible gases located in a water tube boiler? - ANSWER-
flowing around the tubes
What are you preventing by increasing the pressure within a cold boiler gradually?
- ANSWER-thermal shock
3|Page
Seal Low Pressure, 3 of 3
NJ BLACK SEAL LOW PRESSURE, 1 OF 3, NJ BLACK SEAL LOW
PRESSURE, 2 OF 3, NJ BLACK SEAL LOW PRESSURE, 3 OF 3
NEWEST 2025/2026 COMPLETE ALL QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW VERSION!
A boiler operator log must be maintained in a boiler room containing over: -
ANSWER-100 horsepower
If a flame sensing device notices that there is a flame failure, what device does it
secure? - ANSWER-fuel solenoid valve
What type of draft has a fan between the boiler and the chimney? - ANSWER-
induced
What is used to control alkalinity? - ANSWER-caustic soda
What is the best way to decide the blowdown frequency for a boiler? - ANSWER-
boiler water analysis
What device is used to obtain sufficient static head for the returning condensate
in a two-pipe gravity return system? - ANSWER-return trap
1|Page
, NJ Black Seal Low Pressure, 1 of 3, NJ Black Seal Low Pressure, 2 of 3, NJ Black
Seal Low Pressure, 3 of 3
What is the maximum temperature a hot water boiler can be to qualify in New
Jersey as low pressure? - ANSWER-250 degrees
What type of boiler is an HRT (horizontal return tube)? - ANSWER-fire-tube
What is the purge cycle in a boiler meant to do? - ANSWER-remove combustible
gases
Which valve is allowed between the boiler and safety valve? - ANSWER-no valve
Which is a common type of feedwater regulator in a low pressure plant? -
ANSWER-pressure sensitive device
When open, an OS&Y (outside stem & yoke) valve offers ----- to the flow of steam.
- ANSWER-no resistance
What section of the ASME code do hot water heating boilers fall under? -
ANSWER-Section IV
Which describes the combustion chamber of a serpentine tube heating boiler? -
ANSWER-located below the tubes
What should you do if you walked into a boiler room and the safety valves were
popped? - ANSWER-secure the fire at the burner
2|Page
, NJ Black Seal Low Pressure, 1 of 3, NJ Black Seal Low Pressure, 2 of 3, NJ Black
Seal Low Pressure, 3 of 3
What letter stamp denotes a low pressure boiler? - ANSWER-H
In NJ, how often should boilers over 100 horsepower be inspected internally &
externally? - ANSWER-annually
The basic function of an automatic feedwater regulator on a boiler is to: -
ANSWER-maintain proper water level
If a one square inch column of water is one foot tall, how much does it weigh? -
ANSWER-.433 lbs
Where is the flame sensing device located on a boiler? - ANSWER-front
Cracking of the boiler metal can be caused by: - ANSWER-caustic embrittlement
How would you test the operation of the flame failure device? - ANSWER-by
shutting off the fuel supply valve
Where are the combustible gases located in a water tube boiler? - ANSWER-
flowing around the tubes
What are you preventing by increasing the pressure within a cold boiler gradually?
- ANSWER-thermal shock
3|Page
