New York Pipefitter Entry-Level
Certification Examination Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales
2025|2026 Q&A | Instant Download Pdf
1. Which type of pipe material is commonly used for high-pressure steam
systems?
A. PVC
B. Copper
C. Steel
D. Aluminum
Steel is used for high-pressure steam due to its strength and ability to
withstand high temperatures.
2. The standard abbreviation for National Pipe Thread is:
A. NPT
, B. NPTF
C. BSP
D. PT
NPTF (National Pipe Thread Fuel) is used for sealing in fuel systems,
but NPT is more common for general threaded pipes.
3. When measuring pipe outside diameter, which tool is most accurate?
A. Ruler
B. Caliper
C. Tape measure
D. Micrometer
Calipers provide precise measurements of the external diameter of
pipes.
4. Which type of joint is typically used in copper piping?
A. Threaded
B. Soldered
C. Welded
D. Flanged
Copper pipes are commonly joined using soldering techniques.
5. What is the primary purpose of a pipefitter’s level?
A. Cutting pipes
B. Ensuring pipes are horizontal or vertical
C. Measuring pipe thickness
, D. Marking pipe ends
Levels are used to ensure proper alignment in piping installations.
6. The correct pipe thread for gas connections in the US is:
A. BSPT
B. NPT
C. ISO
D. Metric
NPT threads are standard for gas connections in the United States.
7. Which type of welding is commonly used for stainless steel piping?
A. Gas Welding
B. Arc Welding
C. TIG Welding
D. Stick Welding
TIG welding provides clean, precise welds suitable for stainless steel.
8. What is the purpose of an expansion loop in piping?
A. Reduce pressure
B. Absorb thermal expansion
C. Filter impurities
D. Increase flow rate
Expansion loops allow pipes to expand and contract with
temperature changes.
9. The standard pressure rating for Schedule 40 steel pipe is measured
in:
, A. Inches
B. PSI
C. Pounds per Square Inch (PSI)
D. Bar
Pipe schedules indicate wall thickness, and pressure ratings are
measured in PSI.
10. When threading a pipe, which lubricant is recommended?
A. Water
B. Oil
C. Threading oil
D. Grease
Threading oil reduces friction and prevents galling during threading.
11. Which type of valve allows flow in only one direction?
A. Gate valve
B. Ball valve
C. Check valve
D. Globe valve
Check valves prevent backflow, allowing fluid to move in only one
direction.
12. Pipe hangers are used to:
A. Cut pipes
B. Support and secure piping
C. Seal joints
Certification Examination Practice
Questions And Correct Answers
(Verified Answers) Plus Rationales
2025|2026 Q&A | Instant Download Pdf
1. Which type of pipe material is commonly used for high-pressure steam
systems?
A. PVC
B. Copper
C. Steel
D. Aluminum
Steel is used for high-pressure steam due to its strength and ability to
withstand high temperatures.
2. The standard abbreviation for National Pipe Thread is:
A. NPT
, B. NPTF
C. BSP
D. PT
NPTF (National Pipe Thread Fuel) is used for sealing in fuel systems,
but NPT is more common for general threaded pipes.
3. When measuring pipe outside diameter, which tool is most accurate?
A. Ruler
B. Caliper
C. Tape measure
D. Micrometer
Calipers provide precise measurements of the external diameter of
pipes.
4. Which type of joint is typically used in copper piping?
A. Threaded
B. Soldered
C. Welded
D. Flanged
Copper pipes are commonly joined using soldering techniques.
5. What is the primary purpose of a pipefitter’s level?
A. Cutting pipes
B. Ensuring pipes are horizontal or vertical
C. Measuring pipe thickness
, D. Marking pipe ends
Levels are used to ensure proper alignment in piping installations.
6. The correct pipe thread for gas connections in the US is:
A. BSPT
B. NPT
C. ISO
D. Metric
NPT threads are standard for gas connections in the United States.
7. Which type of welding is commonly used for stainless steel piping?
A. Gas Welding
B. Arc Welding
C. TIG Welding
D. Stick Welding
TIG welding provides clean, precise welds suitable for stainless steel.
8. What is the purpose of an expansion loop in piping?
A. Reduce pressure
B. Absorb thermal expansion
C. Filter impurities
D. Increase flow rate
Expansion loops allow pipes to expand and contract with
temperature changes.
9. The standard pressure rating for Schedule 40 steel pipe is measured
in:
, A. Inches
B. PSI
C. Pounds per Square Inch (PSI)
D. Bar
Pipe schedules indicate wall thickness, and pressure ratings are
measured in PSI.
10. When threading a pipe, which lubricant is recommended?
A. Water
B. Oil
C. Threading oil
D. Grease
Threading oil reduces friction and prevents galling during threading.
11. Which type of valve allows flow in only one direction?
A. Gate valve
B. Ball valve
C. Check valve
D. Globe valve
Check valves prevent backflow, allowing fluid to move in only one
direction.
12. Pipe hangers are used to:
A. Cut pipes
B. Support and secure piping
C. Seal joints
