Rhode Island Master Pipefitter Exam | Study Questions
and verified Answers | A+ Graded | 2026 Updates |
100% correct
Welder will get full penetration of first pass - ANSWER- What is the purpose of the 1/8" root
spacing on butt weld fitting?
22 1/2 degrees - ANSWER- What angle do you cut the pipe for a 3 piece elbow?
Change the range of variable type - ANSWER- What is the purpose of a transformer?
True - ANSWER- Can smaller size pipe sometimes be used by using a larger size pump?
True - ANSWER- A pipe saddle is used to protect the pipe insulation from damage?
AC/DC - ANSWER- At what current is a 60-11 weld rod used?
Concentric Reducer, Reducing Tee, Reducing Elbow - ANSWER- Name 3 weld reducing fittings.
1.41 x run - ANSWER- What formula do you use on a 45% offset?
To prevent a boiler from draining out - ANSWER- What is the purpose of a Hartford Loop?
False - ANSWER- Turbulence in a heat exchanger or thermal converter increase the heat.
Gate Valve - ANSWER- In a horizontal positioned drain line what is the proper valve?
False - ANSWER- A flared joint and a compression joint are the same.
Thermocouple - ANSWER- In a gas system a safety valve responds to a
High Pressure - ANSWER- In a gas system when is welded pipe preferred over threaded pipe?
1 1/2 the diameter - ANSWER- From the end of the fitting to centerline what is the
measurement of a STD (long Radius) 90 degree weld elbow?
Diameter X 3.14 - ANSWER- To find the circumference of a pipe
1/16 - ANSWER- The space from end of pipe to shoulder of socket weld fitting is
Feed water side against bottom of seat - ANSWER- Locate a globe valve in a feed water
system
, Too much heat/wrong polarity - ANSWER- What causes excessive weld spatter?
Protect insulation - ANSWER- Why is a saddle installed on a pipe?
Top of Boiler - ANSWER- Where is the pressure gauge on a boiler?
Siphon - ANSWER- What is between pressure gauge and piping?
True - ANSWER- When threading a pipe the pipe should be reamed before threading is
started.
True - ANSWER- The O.D. of pipe stands for outside diameter and the I.D. stands for inside
diameter.
False - ANSWER- All pipe sizes have the same wall thickness.
False - ANSWER- It is not necessary to check the position of the bolt holes on a set of
companion flanges when making a flange joint connection.
False - ANSWER- A ring gasket must have the bolt holes to match the bolt hole in the flange
connection.
False - ANSWER- A compression joint is also known as a flared joint.
True - ANSWER- A welded joint is superior to a screw joint.
True - ANSWER- Gate valves, as a rule, should be either fully open or fully closed.
False - ANSWER- A globe valve has very little resistance to flow.
False - ANSWER- A valve marked only 200 WOG may be used for steam service.
Lug Type - ANSWER- There are three different types of butterfly valves. Name one.
Stem Up - ANSWER- The best way to install a valve in a horizontal line is with the
Gate Valve - ANSWER- Name the most commonly used valve in piping.
1/4 - ANSWER- How many turns are required to open a closed ball valve?
False - ANSWER- A ball check valve can be installed in a vertical line, regardless of direction of
flow.
True - ANSWER- The valve closest to the boiler, in the boiler feed line must be a globe valve.
and verified Answers | A+ Graded | 2026 Updates |
100% correct
Welder will get full penetration of first pass - ANSWER- What is the purpose of the 1/8" root
spacing on butt weld fitting?
22 1/2 degrees - ANSWER- What angle do you cut the pipe for a 3 piece elbow?
Change the range of variable type - ANSWER- What is the purpose of a transformer?
True - ANSWER- Can smaller size pipe sometimes be used by using a larger size pump?
True - ANSWER- A pipe saddle is used to protect the pipe insulation from damage?
AC/DC - ANSWER- At what current is a 60-11 weld rod used?
Concentric Reducer, Reducing Tee, Reducing Elbow - ANSWER- Name 3 weld reducing fittings.
1.41 x run - ANSWER- What formula do you use on a 45% offset?
To prevent a boiler from draining out - ANSWER- What is the purpose of a Hartford Loop?
False - ANSWER- Turbulence in a heat exchanger or thermal converter increase the heat.
Gate Valve - ANSWER- In a horizontal positioned drain line what is the proper valve?
False - ANSWER- A flared joint and a compression joint are the same.
Thermocouple - ANSWER- In a gas system a safety valve responds to a
High Pressure - ANSWER- In a gas system when is welded pipe preferred over threaded pipe?
1 1/2 the diameter - ANSWER- From the end of the fitting to centerline what is the
measurement of a STD (long Radius) 90 degree weld elbow?
Diameter X 3.14 - ANSWER- To find the circumference of a pipe
1/16 - ANSWER- The space from end of pipe to shoulder of socket weld fitting is
Feed water side against bottom of seat - ANSWER- Locate a globe valve in a feed water
system
, Too much heat/wrong polarity - ANSWER- What causes excessive weld spatter?
Protect insulation - ANSWER- Why is a saddle installed on a pipe?
Top of Boiler - ANSWER- Where is the pressure gauge on a boiler?
Siphon - ANSWER- What is between pressure gauge and piping?
True - ANSWER- When threading a pipe the pipe should be reamed before threading is
started.
True - ANSWER- The O.D. of pipe stands for outside diameter and the I.D. stands for inside
diameter.
False - ANSWER- All pipe sizes have the same wall thickness.
False - ANSWER- It is not necessary to check the position of the bolt holes on a set of
companion flanges when making a flange joint connection.
False - ANSWER- A ring gasket must have the bolt holes to match the bolt hole in the flange
connection.
False - ANSWER- A compression joint is also known as a flared joint.
True - ANSWER- A welded joint is superior to a screw joint.
True - ANSWER- Gate valves, as a rule, should be either fully open or fully closed.
False - ANSWER- A globe valve has very little resistance to flow.
False - ANSWER- A valve marked only 200 WOG may be used for steam service.
Lug Type - ANSWER- There are three different types of butterfly valves. Name one.
Stem Up - ANSWER- The best way to install a valve in a horizontal line is with the
Gate Valve - ANSWER- Name the most commonly used valve in piping.
1/4 - ANSWER- How many turns are required to open a closed ball valve?
False - ANSWER- A ball check valve can be installed in a vertical line, regardless of direction of
flow.
True - ANSWER- The valve closest to the boiler, in the boiler feed line must be a globe valve.
