BLACK SEAL LP NJ EXAM 2025/2026
QUESTIONS AND ANSWERS 100% PASS
Carryover can lead to: - ANS Water Hammer
If water leaves the boiler at 170 degrees, what temperature does it return at? - ANS 150
Degrees
The positioning control cannot function without: - ANS Air
What fire tube boiler is most efficient? - ANS 4 Pass
What is the purpose of a check valve? - ANS Allows flow in one direction
A solenoid valve is: - ANS Is an automatic gas shutoff valve
What does PSIA stand for? - ANS PSIG + Atmospheric Pressure
Water column & gauge glass should be blown down: - ANS Daily
What is the most common cause of cast iron boiler failure? - ANS Cracking
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, What is the most common cause of problems in a hot water system? - ANS AIR
External feedwater treatment can be a ______ process - ANS Cold lime soda, hot lime soda,
or ion exchange.
Natural water may contain: - ANS Solids and other pollutants
Where are the combustion gases on a serpentine boiler? - ANS Below the tubes
A steam gauge is calibrated in: - ANS Pounds per square inch
What code is a heating boiler built to? - ANS ASME Section IV
What test is performed on re-tubed (repaired) boiler and what is the water temp? -
ANS Hydrostatic Test at 70 F
Under what ASME section is the care and operation of heating boilers? - ANS Section VI
The expansion tank in a hot water system allows for the expansion of? - ANS WATER
As the water in a hot water system expands: - ANS The pressure remains constant
The most common type of pressure control device used is the: - ANS Mercury Tube
Heavy soot on the fireside of the tubes: - ANS Should be removed for better heat transfer
When connecting a Bourdon tube steam gauge to a boiler, a pigtail is used to: - ANS Protect
Bourdon Tube from steam
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
QUESTIONS AND ANSWERS 100% PASS
Carryover can lead to: - ANS Water Hammer
If water leaves the boiler at 170 degrees, what temperature does it return at? - ANS 150
Degrees
The positioning control cannot function without: - ANS Air
What fire tube boiler is most efficient? - ANS 4 Pass
What is the purpose of a check valve? - ANS Allows flow in one direction
A solenoid valve is: - ANS Is an automatic gas shutoff valve
What does PSIA stand for? - ANS PSIG + Atmospheric Pressure
Water column & gauge glass should be blown down: - ANS Daily
What is the most common cause of cast iron boiler failure? - ANS Cracking
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, What is the most common cause of problems in a hot water system? - ANS AIR
External feedwater treatment can be a ______ process - ANS Cold lime soda, hot lime soda,
or ion exchange.
Natural water may contain: - ANS Solids and other pollutants
Where are the combustion gases on a serpentine boiler? - ANS Below the tubes
A steam gauge is calibrated in: - ANS Pounds per square inch
What code is a heating boiler built to? - ANS ASME Section IV
What test is performed on re-tubed (repaired) boiler and what is the water temp? -
ANS Hydrostatic Test at 70 F
Under what ASME section is the care and operation of heating boilers? - ANS Section VI
The expansion tank in a hot water system allows for the expansion of? - ANS WATER
As the water in a hot water system expands: - ANS The pressure remains constant
The most common type of pressure control device used is the: - ANS Mercury Tube
Heavy soot on the fireside of the tubes: - ANS Should be removed for better heat transfer
When connecting a Bourdon tube steam gauge to a boiler, a pigtail is used to: - ANS Protect
Bourdon Tube from steam
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
