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Master Plumber / Gas Fitter

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Maryland State Board of Plumbing
500 N. Calvert St, Room 302
Baltimore, MD  21202
Phone: (410) 230-6314

Exam Administrator

PSI Licensure: Certification
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (800) 733-9267

Exam Type


Exam Content

The exam content shown below only lists main category headings.  Please consult the PSI exam bulletin from the button below for more detailed information about subject sub-categories.

Subject Areas# of
Plumbing Fundamentals and Safety5
Materials, Uses and Specifications6
Traps, Interceptors and Backwater Valves4
Plumbing Fixtures, Fixture Fittings and Plumbing Appliances4
Water Supply Systems8
Backflow Prevention10
Drain, Waste and Vent Systems13
Special Topics3
Gas Appliances and Piping40
Plumbing Mathematics7
Total number of test questions:
Time allowed (minutes):

Books Allowed in the Exam

National Standard Plumbing Code Illustrated, 2015, PHCC
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NFPA 54: National Fuel Gas Code, 2015, NFPA
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Mathematics for Plumbers and Pipefitters, 8th Edition, Lee Smith
Buy at Amazon
Any standard backflow text
Code of Federal Regulations, 29 CFR Part 1926 (OSHA), GPO [or] (OSHA) Selections by PSI
Buy from Publisher
Available Study Materials
NFPA Fire & Gas Standard
Practice Exam
$44.95 — $54.95

Sample questions are sourced from the NFPA book title(s) highlighted (in light green) above.

Pricing is based on the number of questions contained in the individual files and the book titles you choose.

A 15% discount applies when ordering TWO (2) OR MORE BOOK TITLES.

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