TEXAS MASTER PLUMBING EXAM (ACTUAL
2026/2027) QUESTIONS WITH 100% CORRECT
ANSWERS GRADED A+
In order to Register as a Drain Cleaner Registant, an apprentice must have atleast –
ANSWER No experience necessary
In order to take the Tradesman Plumber- Limited Licensed exam an apprentice
must have at least - ANSWER_4000 Hours of experience
In order to take the Journeyman Plumber exam, an apprentice must have at least -
ANSWER_8000 hours of Experience
All Service Vehicles used for plumbing must be identified with - ANSWER_RMP
license number
Company name
Piping passing under or through walls shall be – ANSWER Protected from
breakage
Piping and fittings approved for buildings sewers only may be installed inside and
outside of the building – ANSWER False
What size vertical steel pipe must be supported at every floor level? -
ANSWER_1-!/4 or larger
Test Gauges shall have a pressure range not to exceed – ANSWER Twice the test
pressure applied
, Concealed slip joint connections shall be – ANSWER Prohibited
Kitchen sink tail piece shall be no smaller than - ANSWER_1 1/2'
Lavatory tail piece shall be no smaller than - ANSWER_1 1/4''
No water closet or bidet shall be set closer than _____ from its center to any side
wall - ANSWER_15''
Hot water for public lavatories shall be limited to a maximum temperature of -
ANSWER_120 degrees
All pipe, fittings, and fixtures must be – ANSWER Listed and approved
Burred ends of pipe and tubing must be – ANSWER Reamed to full bore
Permits are not required to replace Water heaters. – ANSWER False
Water Heaters may be legally installed exposed in bedrooms. – ANSWER False
Type B double wall gas vent pipe may be allowed to contact combustible materials
– ANSWER False
T&P relief valves are only required on Water heaters if they can be pipes to the
outdoors – ANSWER False
2026/2027) QUESTIONS WITH 100% CORRECT
ANSWERS GRADED A+
In order to Register as a Drain Cleaner Registant, an apprentice must have atleast –
ANSWER No experience necessary
In order to take the Tradesman Plumber- Limited Licensed exam an apprentice
must have at least - ANSWER_4000 Hours of experience
In order to take the Journeyman Plumber exam, an apprentice must have at least -
ANSWER_8000 hours of Experience
All Service Vehicles used for plumbing must be identified with - ANSWER_RMP
license number
Company name
Piping passing under or through walls shall be – ANSWER Protected from
breakage
Piping and fittings approved for buildings sewers only may be installed inside and
outside of the building – ANSWER False
What size vertical steel pipe must be supported at every floor level? -
ANSWER_1-!/4 or larger
Test Gauges shall have a pressure range not to exceed – ANSWER Twice the test
pressure applied
, Concealed slip joint connections shall be – ANSWER Prohibited
Kitchen sink tail piece shall be no smaller than - ANSWER_1 1/2'
Lavatory tail piece shall be no smaller than - ANSWER_1 1/4''
No water closet or bidet shall be set closer than _____ from its center to any side
wall - ANSWER_15''
Hot water for public lavatories shall be limited to a maximum temperature of -
ANSWER_120 degrees
All pipe, fittings, and fixtures must be – ANSWER Listed and approved
Burred ends of pipe and tubing must be – ANSWER Reamed to full bore
Permits are not required to replace Water heaters. – ANSWER False
Water Heaters may be legally installed exposed in bedrooms. – ANSWER False
Type B double wall gas vent pipe may be allowed to contact combustible materials
– ANSWER False
T&P relief valves are only required on Water heaters if they can be pipes to the
outdoors – ANSWER False
