G2 Gas Technician Module 15 A Revised
Exam Questions with 100% Correct
Answers | Updated 2026 | Guaranteed
success
What are the two main purposes of gas pressure regulators? - CORRECT ANSWERS To
reduce and maintain the downstream pressure and to provide pressure to appliances or burners
What are the four categories of a gas pressure regulators? - CORRECT ANSWERS First
stage/Service Regulator, Line Pressure Regulator, Appliance Regulator
What is lock up pressure and how do you check it? - CORRECT ANSWERS The pressure under
which downstream pressure will stabilize after burner shuts down, Check it by closing shut-off valve and
measure downstream pressure
Where is the hydro-static relief valve used? - CORRECT ANSWERS Liquid Propane between
two shut off valves
What must the size of the vent piping from a relief device be? - CORRECT ANSWERS Same
size as the opening
What are the four elements of a direct-operated regulator? - CORRECT ANSWERS Loading
Element, Measuring Element, Restricting Element, Atmospheric Vent
When flow rate increases through a regulator, what happens to the downstream pressure? - CORRECT
ANSWERS Increases
What is the maximum allowed propane pressure in a building? - CORRECT ANSWERS 20 Psig
, What controls the downstream pressure in a regulator? - CORRECT ANSWERS The Loading
Element
What type of regulator arrangement is required in all permanent propane installations? - CORRECT
ANSWERS Two Stage Regulators
Will gas flow be interrupted by changing a propane cylinder if an automatic changeover regulator is used
on the installation? - CORRECT ANSWERS No
What five factors need to be considered before selecting a regulator? - CORRECT ANSWERS
Rate of Flow, The Type of Gas, Inlet Gas Pressure, Outlet Gas Pressure and Pipe size
What is the purpose of the leak limiter? - CORRECT ANSWERS To allow gas to escape if the
diaphram is ruptured
Under what conditions can a leak limiter be used? - CORRECT ANSWERS In the event the line
regulator doesn't have an internal leak limiter indoors.
What is the maximum allowed leakage rate for a leak limiter installed on a natural gas regulator? -
CORRECT ANSWERS 2.5 cu ft/hr
What is the maximum allowed leakage rate for a leak limiter installed on a propane regulator? -
CORRECT ANSWERS 1 cu ft/hr
Should the arrow on a regulator body point upstream? - CORRECT ANSWERS No, It should
face the direction of flow, downstream
Exam Questions with 100% Correct
Answers | Updated 2026 | Guaranteed
success
What are the two main purposes of gas pressure regulators? - CORRECT ANSWERS To
reduce and maintain the downstream pressure and to provide pressure to appliances or burners
What are the four categories of a gas pressure regulators? - CORRECT ANSWERS First
stage/Service Regulator, Line Pressure Regulator, Appliance Regulator
What is lock up pressure and how do you check it? - CORRECT ANSWERS The pressure under
which downstream pressure will stabilize after burner shuts down, Check it by closing shut-off valve and
measure downstream pressure
Where is the hydro-static relief valve used? - CORRECT ANSWERS Liquid Propane between
two shut off valves
What must the size of the vent piping from a relief device be? - CORRECT ANSWERS Same
size as the opening
What are the four elements of a direct-operated regulator? - CORRECT ANSWERS Loading
Element, Measuring Element, Restricting Element, Atmospheric Vent
When flow rate increases through a regulator, what happens to the downstream pressure? - CORRECT
ANSWERS Increases
What is the maximum allowed propane pressure in a building? - CORRECT ANSWERS 20 Psig
, What controls the downstream pressure in a regulator? - CORRECT ANSWERS The Loading
Element
What type of regulator arrangement is required in all permanent propane installations? - CORRECT
ANSWERS Two Stage Regulators
Will gas flow be interrupted by changing a propane cylinder if an automatic changeover regulator is used
on the installation? - CORRECT ANSWERS No
What five factors need to be considered before selecting a regulator? - CORRECT ANSWERS
Rate of Flow, The Type of Gas, Inlet Gas Pressure, Outlet Gas Pressure and Pipe size
What is the purpose of the leak limiter? - CORRECT ANSWERS To allow gas to escape if the
diaphram is ruptured
Under what conditions can a leak limiter be used? - CORRECT ANSWERS In the event the line
regulator doesn't have an internal leak limiter indoors.
What is the maximum allowed leakage rate for a leak limiter installed on a natural gas regulator? -
CORRECT ANSWERS 2.5 cu ft/hr
What is the maximum allowed leakage rate for a leak limiter installed on a propane regulator? -
CORRECT ANSWERS 1 cu ft/hr
Should the arrow on a regulator body point upstream? - CORRECT ANSWERS No, It should
face the direction of flow, downstream
