New York Pipefitter Entry Exam 2026: 100 Practice Questions & Answers — NYC Trade Licensing Study Guide to Pass Your Apprenticeship Test with Confidence

New York Pipefitter Entry-Level
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Certification Examination Practice
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Questions And Correct Answers
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(Verified Answers) Plus Rationales
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2025|2026 Q&A | Instant Download Pdf
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1. Which type of pipe material is commonly used for high-pressure
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steam systems?
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A. PVC
B. Copper
C. Steel
D. Aluminum
Steel is used for high-pressure steam due to its strength and
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ability to withstand high temperatures.
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2. The standard abbreviation for National Pipe Thread is:
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A. NPT

, B. NPTF
C. BSP
D. PT
NPTF (National Pipe Thread Fuel) is used for sealing in fuel
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systems, but NPT is more common for general threaded pipes.
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3. When measuring pipe outside diameter, which tool is most accurate?
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A. Ruler
B. Caliper
C. Tape measure oo




D. Micrometer
Calipers provide precise measurements of the external diameter
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of pipes.
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4. Which type of joint is typically used in copper piping?
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A. Threaded
B. Soldered
C. Welded
D. Flanged
Copper pipes are commonly joined using soldering techniques.
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5. What is the primary purpose of a pipefitter’s level?
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A. Cutting pipes oo




B. Ensuring pipes are horizontal or vertical
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C. Measuring pipe thickness oo oo

, D. Marking pipe ends oo oo




Levels are used to ensure proper alignment in piping installations.
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6. The correct pipe thread for gas connections in the US is:
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A. BSPT
B. NPT
C. ISO
D. Metric
NPT threads are standard for gas connections in the United States.
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7. Which type of welding is commonly used for stainless steel piping?
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A. Gas Weldingoo




B. Arc Welding
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C. TIG Weldingoo




D. Stick Welding oo




TIG welding provides clean, precise welds suitable for stainless steel.
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8. What is the purpose of an expansion loop in piping?
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A. Reduce pressure oo




B. Absorb thermal expansion oo oo




C. Filter impurities oo




D. Increase flow rate oo oo




Expansion loops allow pipes to expand and contract with
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oo temperature changes. oo




9. The standard pressure rating for Schedule 40 steel pipe is
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measured in:
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, A. Inches
B. PSI
C. Pounds per Square Inch (PSI)
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D. Bar
Pipe schedules indicate wall thickness, and pressure ratings are
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oo measured in PSI. oo oo




10. When threading a pipe, which lubricant is recommended?
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A. Water
B. Oil
C. Threading oil oo




D. Grease
Threading oil reduces friction and prevents galling during threading.
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11. Which type of valve allows flow in only one direction?
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A. Gate valve oo




B. Ball valve
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C. Check valve oo




D. Globe valve oo




Check valves prevent backflow, allowing fluid to move in only one
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oo direction.

12. Pipe hangers are used to:
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A. Cut pipesoo




B. Support and secure pipingoo oo oo




C. Seal joints
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