TEXAS MASTER PLUMBING EXAM QUESTIONS
WITH 100% CORRECT VERIFIED ANSWERS
(ACTUAL 2025)
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
Fixture connections that require the removal of an access panel for
servicing are considered - ,,,,answer,,,,..Accessible
That part of the lowest piping of a drainage system that receives the
discharge from soil, waste, and other drainage pipes inside the walls
fo the building and conveys it to a point 2 feet outside the building
wall is a - ,,,,answer,,,,..Building sewer
A vertical vent that is a continuation of the drain to which it
connects is a - ,,,,answer,,,,..Circuit vent
A horizontal drain that is sized to provide free movement of air
above the flow line of the drain is called a - ,,,,answer,,,,..Continuous
waste system
The length along the centerline of the pipe and fittings is the -
,,,,answer,,,,..Diameter length
,A device integrated within an air accumulator vessel that is designed
to discharge a predetermined quantity of water to fixtures for
flushing purposes is a - ,,,,answer,,,,..Expansion tank
The combination of fittings that may be used to make an offset and
is considered a vertical pipe are - ,,,,answer,,,,..1-45 degree and 1-
45degree
Water safe for drinking and culinary purposes is referred to as -
,,,,answer,,,,..Potable water
By code definition, a stack is always - ,,,,answer,,,,..Vertical
A vent that also serves as a drain is a - ,,,,answer,,,,..Wet vent
A pipe that makes an angle of not more than 45 degrees with the
vertical is considered - ,,,,answer,,,,..Diagonal pipe
he vertical depth of a trap seal is measured from - ,,,,answer,,,,..The
outlet of the trap to the bottom of the trap
A mixing valve that senses outlet temperature and compensates for
fluctuations in incoming hot or cold water temperature is a -
,,,,answer,,,,..Thermostatic (temperature control) valve
The lowest portion of the inside of a horizontal pipe is called the -
,,,,answer,,,,..Bottom
PEX is the acronym for - ,,,,answer,,,,..Cross-linked polyethylene
A confined space is a room or space having a volume equal to at
least ______ of the aggregate input rating of all the fuel-burning
appliances in that space. - ,,,,answer,,,,..100 cubic feet per BTU/hr.
, A joint obtained by the joining of metal parts with metallic mixtures
or alloys that melt at a temperature up to 840 degrees is a -
,,,,answer,,,,..Soldered joint
The organization, office, or individual responsible for enforcing the
requirements of a
code or standard is the - ,,,,answer,,,,..Plumbing Inspector
That portion of a drainage system that does not drain by gravity into
the building sewer is known as a - ,,,,answer,,,,..Sewer ejector
A pipe inside a building that conveys storm water from the roof to a
storm drain is called a (an) - ,,,,answer,,,,..Building storm drain
A device designed to provide protection against hydraulic shock in
the building water supply system is called a - ,,,,answer,,,,..Water
hammer arrestor
A device installed in a drainage system to prevent reverse flow is a -
,,,,answer,,,,..Backflow preventer
Any pressure less than that by atmosphere is a -
,,,,answer,,,,..Negative pressure
When a backflow device does not bear a critical level marking, the
part of the device that shall constitute the critical level is the -
,,,,answer,,,,..Top
Disposal of sewage, or other liquid wastes, shall be by means of -
,,,,answer,,,,..The drainage system of the building or premises
A connection to the public sewer, or private sewage disposal system,
is required for - ,,,,answer,,,,..Buildings with plumbing fixtures
WITH 100% CORRECT VERIFIED ANSWERS
(ACTUAL 2025)
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
Fixture connections that require the removal of an access panel for
servicing are considered - ,,,,answer,,,,..Accessible
That part of the lowest piping of a drainage system that receives the
discharge from soil, waste, and other drainage pipes inside the walls
fo the building and conveys it to a point 2 feet outside the building
wall is a - ,,,,answer,,,,..Building sewer
A vertical vent that is a continuation of the drain to which it
connects is a - ,,,,answer,,,,..Circuit vent
A horizontal drain that is sized to provide free movement of air
above the flow line of the drain is called a - ,,,,answer,,,,..Continuous
waste system
The length along the centerline of the pipe and fittings is the -
,,,,answer,,,,..Diameter length
,A device integrated within an air accumulator vessel that is designed
to discharge a predetermined quantity of water to fixtures for
flushing purposes is a - ,,,,answer,,,,..Expansion tank
The combination of fittings that may be used to make an offset and
is considered a vertical pipe are - ,,,,answer,,,,..1-45 degree and 1-
45degree
Water safe for drinking and culinary purposes is referred to as -
,,,,answer,,,,..Potable water
By code definition, a stack is always - ,,,,answer,,,,..Vertical
A vent that also serves as a drain is a - ,,,,answer,,,,..Wet vent
A pipe that makes an angle of not more than 45 degrees with the
vertical is considered - ,,,,answer,,,,..Diagonal pipe
he vertical depth of a trap seal is measured from - ,,,,answer,,,,..The
outlet of the trap to the bottom of the trap
A mixing valve that senses outlet temperature and compensates for
fluctuations in incoming hot or cold water temperature is a -
,,,,answer,,,,..Thermostatic (temperature control) valve
The lowest portion of the inside of a horizontal pipe is called the -
,,,,answer,,,,..Bottom
PEX is the acronym for - ,,,,answer,,,,..Cross-linked polyethylene
A confined space is a room or space having a volume equal to at
least ______ of the aggregate input rating of all the fuel-burning
appliances in that space. - ,,,,answer,,,,..100 cubic feet per BTU/hr.
, A joint obtained by the joining of metal parts with metallic mixtures
or alloys that melt at a temperature up to 840 degrees is a -
,,,,answer,,,,..Soldered joint
The organization, office, or individual responsible for enforcing the
requirements of a
code or standard is the - ,,,,answer,,,,..Plumbing Inspector
That portion of a drainage system that does not drain by gravity into
the building sewer is known as a - ,,,,answer,,,,..Sewer ejector
A pipe inside a building that conveys storm water from the roof to a
storm drain is called a (an) - ,,,,answer,,,,..Building storm drain
A device designed to provide protection against hydraulic shock in
the building water supply system is called a - ,,,,answer,,,,..Water
hammer arrestor
A device installed in a drainage system to prevent reverse flow is a -
,,,,answer,,,,..Backflow preventer
Any pressure less than that by atmosphere is a -
,,,,answer,,,,..Negative pressure
When a backflow device does not bear a critical level marking, the
part of the device that shall constitute the critical level is the -
,,,,answer,,,,..Top
Disposal of sewage, or other liquid wastes, shall be by means of -
,,,,answer,,,,..The drainage system of the building or premises
A connection to the public sewer, or private sewage disposal system,
is required for - ,,,,answer,,,,..Buildings with plumbing fixtures
