MASSACHUSETTS JOURNEYMAN PIPEFITTER FINAL PAPER
2025/2026 QUESTIONS WITH ANSWERS GRADED A+
✔✔full area of the valve outlet - ✔✔When a discharge pipe is used on a safety valve ,
the cross-sectional area shall not be less than which of the following?
✔✔406 degrees - ✔✔What is the maximum temperature limitation for non-ferrous pipe
to be used directly attached to a boiler?
✔✔protect a steam pressure gauge - ✔✔A syphon is used to _______________ .
✔✔safety relieving capacity - ✔✔The pipe sizes required for the boiler equalizer lined
piped between the steam outlet and the return line are based on ______________ .
✔✔in the return pipe connection - ✔✔The heating boiler code requires that when a stop
valve is used in the supply pipe connection of a single steam heating boiler, there shall
be an additional stop valve placed _________________ .
✔✔pressure stamped on the safety valve - ✔✔The minimum pressure rating of all
valves or cocks on a heating boiler shall be at least equal to the _____________ .
✔✔100 - ✔✔All valves and fittings on steam lines for boiler external piping of high
pressure boilers shall have a pressure rating of at least _______________ psig.
✔✔1" - ✔✔According to section 1, ASME code, what is the minimum size of pipes
connecting the water column to a boiler in inches?
✔✔4" - ✔✔ASME B.31.1 Power Piping Code limits the size of slip-on flanges to be used
for boiler external piping. This size limitation is what pipe size in diameter?
✔✔3" - ✔✔The ASME Power Piping Code B31.1 limits the size of ANSI class 600
socket welded flanges for use in boiler external piping. What is the maximum size
limitation?
✔✔Cast Iron - ✔✔The installation of which type of safety relief valve body for high-
temperature water boilers is prohibited?
✔✔2 stop valves having an ample free blow drain between them - ✔✔When 2 or more
high pressure boilers are connected to a common steam header, the connection from
each boiler having a manhole opening shall be fitted with _________________ .
✔✔3/4" - ✔✔Each High temperature water boiler shall have a bottom drain connection
of at least NPS __________ inch in direct connection with the lowest water space
practical.
, ✔✔first stop valve - ✔✔An ASME code stamp is required for work on the high pressure
main steam line of a single boiler installation from the boiler proper outlet and out to
which of the following?
✔✔high-temperature water boiler safety relief valves - ✔✔In accordance with ASME
Code, Section 1, if a muffler is used on a safety valve or safety relief valve, it shall have
sufficient outlet area to prevent back pressure from interfering with the proper operation
and discharge capacity of the valve. Mufflers shall not be used under which of the
following conditions?
✔✔100 - ✔✔ASME B31.1, Power Piping Code requires that the boiler blow-off fittings
shall be steel and the thickness of pipe and fittings shall not be less than that of
schedule 80 pipe when the boiler pressure exceeds what pressure (psig)?
✔✔1/2" - ✔✔Sight Glass Minimum Connection
✔✔3/4" - ✔✔Low Water Cut-off Draw Minimum Connection
✔✔1" - ✔✔Water Column Minimum Connection
✔✔3/4" - ✔✔Control Manifold Minimum Connection
✔✔1/4" - ✔✔Sight Glass Drain Minimum Connection
✔✔1" - ✔✔Bottom Blow-Off Minimum Connection
✔✔2 1/2" - ✔✔Bottom Blow-Off Maximum Connection
✔✔2 1/2" - ✔✔Surface Blow-Down Maximum Connection
✔✔3" - ✔✔Threaded Safety Valve Maximum Connection
✔✔4 1/2" - ✔✔Flanged Safety Valve Maximum Connection
✔✔Up to 2" - ✔✔Steam Stop Valve Non-Indicating
✔✔1/2" - ✔✔Take-off for Control Line Minimum Connection
✔✔3" - ✔✔Socket Welded Fitting Maximum Size
✔✔2 1/2" and over - ✔✔Hangers Must be Adjusted Over
✔✔1/4" - ✔✔Minimum Size Syphon Non-Ferrous
2025/2026 QUESTIONS WITH ANSWERS GRADED A+
✔✔full area of the valve outlet - ✔✔When a discharge pipe is used on a safety valve ,
the cross-sectional area shall not be less than which of the following?
✔✔406 degrees - ✔✔What is the maximum temperature limitation for non-ferrous pipe
to be used directly attached to a boiler?
✔✔protect a steam pressure gauge - ✔✔A syphon is used to _______________ .
✔✔safety relieving capacity - ✔✔The pipe sizes required for the boiler equalizer lined
piped between the steam outlet and the return line are based on ______________ .
✔✔in the return pipe connection - ✔✔The heating boiler code requires that when a stop
valve is used in the supply pipe connection of a single steam heating boiler, there shall
be an additional stop valve placed _________________ .
✔✔pressure stamped on the safety valve - ✔✔The minimum pressure rating of all
valves or cocks on a heating boiler shall be at least equal to the _____________ .
✔✔100 - ✔✔All valves and fittings on steam lines for boiler external piping of high
pressure boilers shall have a pressure rating of at least _______________ psig.
✔✔1" - ✔✔According to section 1, ASME code, what is the minimum size of pipes
connecting the water column to a boiler in inches?
✔✔4" - ✔✔ASME B.31.1 Power Piping Code limits the size of slip-on flanges to be used
for boiler external piping. This size limitation is what pipe size in diameter?
✔✔3" - ✔✔The ASME Power Piping Code B31.1 limits the size of ANSI class 600
socket welded flanges for use in boiler external piping. What is the maximum size
limitation?
✔✔Cast Iron - ✔✔The installation of which type of safety relief valve body for high-
temperature water boilers is prohibited?
✔✔2 stop valves having an ample free blow drain between them - ✔✔When 2 or more
high pressure boilers are connected to a common steam header, the connection from
each boiler having a manhole opening shall be fitted with _________________ .
✔✔3/4" - ✔✔Each High temperature water boiler shall have a bottom drain connection
of at least NPS __________ inch in direct connection with the lowest water space
practical.
, ✔✔first stop valve - ✔✔An ASME code stamp is required for work on the high pressure
main steam line of a single boiler installation from the boiler proper outlet and out to
which of the following?
✔✔high-temperature water boiler safety relief valves - ✔✔In accordance with ASME
Code, Section 1, if a muffler is used on a safety valve or safety relief valve, it shall have
sufficient outlet area to prevent back pressure from interfering with the proper operation
and discharge capacity of the valve. Mufflers shall not be used under which of the
following conditions?
✔✔100 - ✔✔ASME B31.1, Power Piping Code requires that the boiler blow-off fittings
shall be steel and the thickness of pipe and fittings shall not be less than that of
schedule 80 pipe when the boiler pressure exceeds what pressure (psig)?
✔✔1/2" - ✔✔Sight Glass Minimum Connection
✔✔3/4" - ✔✔Low Water Cut-off Draw Minimum Connection
✔✔1" - ✔✔Water Column Minimum Connection
✔✔3/4" - ✔✔Control Manifold Minimum Connection
✔✔1/4" - ✔✔Sight Glass Drain Minimum Connection
✔✔1" - ✔✔Bottom Blow-Off Minimum Connection
✔✔2 1/2" - ✔✔Bottom Blow-Off Maximum Connection
✔✔2 1/2" - ✔✔Surface Blow-Down Maximum Connection
✔✔3" - ✔✔Threaded Safety Valve Maximum Connection
✔✔4 1/2" - ✔✔Flanged Safety Valve Maximum Connection
✔✔Up to 2" - ✔✔Steam Stop Valve Non-Indicating
✔✔1/2" - ✔✔Take-off for Control Line Minimum Connection
✔✔3" - ✔✔Socket Welded Fitting Maximum Size
✔✔2 1/2" and over - ✔✔Hangers Must be Adjusted Over
✔✔1/4" - ✔✔Minimum Size Syphon Non-Ferrous
