TEXAS MASTER PLUMBING EXAM QUESTIONS
WITH 100% CORRECT VERIFIED ANSWERS
(ACTUAL 2025)
INTRODUCTION:
This document contains the official set of Texas Master Plumbing
Exam questions with 100% verified correct answers for the 2025
exam. It covers all essential topics, including licensing rules, renewal
requirements, plumbing codes, gas piping, drainage systems, venting,
water heaters, safety standards, and accessibility regulations.
Designed as a complete study resource, it ensures thorough
preparation for both technical and legal aspects of the exam.
EXAM QUESTIONS AND ANSWERS:
The UPC maximum design operating pressure of natural gas piping
is --- correct answer ---5 Psi
The UPC maximum design operating pressure of LP gas piping is ---
correct answer ---20 PSi
,Movable internal parts is NOT a requirement of a trap --- correct
answer ---True
Strainer are required on a roof drain --- correct answer ---True
Per UPC, licensed plumbers can legally turn a gas meter valve back
on after the gas supplier has turned it off --- correct answer ---
False
Copper pipe may never be used for Natural Gas piping --- correct
answer ---False
New natural gas piping systems require testing an inspection
before put into use --- correct answer ---True
There are no special fittings required to connect plastic gas piping
to metallic pi[ing --- correct answer ---False
There are no special fitting required to connect PVC piping to clay
piping --- correct answer ---False
Piping for LP gas systems should be ran totally flat --- correct
answer ---False
, Drip legs/ sediment traps in gas piping systems should be at least --
- correct answer ---3'' long
Unions on gas piping may not be concealed --- correct answer ---
True
If one meter feeds multiple buildings, an emergency shutoff valve
must be placed outside each building --- correct answer ---True
What test medium is not allowed for natural gas piping? --- correct
answer ---Oxygen
Per UPC minimum test pressure for gas piping is --- correct answer
---3PSI
Per TAS, Wheelchair accessible drinking fountains must have the
spout located a maximum of how high above the first floor? ---
correct answer ---36"
Per TAS, Standing persons accessible drinking fountains must have
the spout located --- correct answer ---38'' - 43" above finish floor
WITH 100% CORRECT VERIFIED ANSWERS
(ACTUAL 2025)
INTRODUCTION:
This document contains the official set of Texas Master Plumbing
Exam questions with 100% verified correct answers for the 2025
exam. It covers all essential topics, including licensing rules, renewal
requirements, plumbing codes, gas piping, drainage systems, venting,
water heaters, safety standards, and accessibility regulations.
Designed as a complete study resource, it ensures thorough
preparation for both technical and legal aspects of the exam.
EXAM QUESTIONS AND ANSWERS:
The UPC maximum design operating pressure of natural gas piping
is --- correct answer ---5 Psi
The UPC maximum design operating pressure of LP gas piping is ---
correct answer ---20 PSi
,Movable internal parts is NOT a requirement of a trap --- correct
answer ---True
Strainer are required on a roof drain --- correct answer ---True
Per UPC, licensed plumbers can legally turn a gas meter valve back
on after the gas supplier has turned it off --- correct answer ---
False
Copper pipe may never be used for Natural Gas piping --- correct
answer ---False
New natural gas piping systems require testing an inspection
before put into use --- correct answer ---True
There are no special fittings required to connect plastic gas piping
to metallic pi[ing --- correct answer ---False
There are no special fitting required to connect PVC piping to clay
piping --- correct answer ---False
Piping for LP gas systems should be ran totally flat --- correct
answer ---False
, Drip legs/ sediment traps in gas piping systems should be at least --
- correct answer ---3'' long
Unions on gas piping may not be concealed --- correct answer ---
True
If one meter feeds multiple buildings, an emergency shutoff valve
must be placed outside each building --- correct answer ---True
What test medium is not allowed for natural gas piping? --- correct
answer ---Oxygen
Per UPC minimum test pressure for gas piping is --- correct answer
---3PSI
Per TAS, Wheelchair accessible drinking fountains must have the
spout located a maximum of how high above the first floor? ---
correct answer ---36"
Per TAS, Standing persons accessible drinking fountains must have
the spout located --- correct answer ---38'' - 43" above finish floor
