MASSACHUSETTS JOURNEYMAN PIPEFITTER EXAM
(HEATING, COOLING) PJ-01QUESTIONS 2026
1/2" - Answers -Sight Glass Minimum Connection
3/4" - Answers -Low Water Cut-off Draw Minimum Connection
1" - Answers -Water Column Minimum Connection
3/4" - Answers -Control Manifold Minimum Connection
1/4" - Answers -Sight Glass Drain Minimum Connection
1" - Answers -Bottom Blow-Off Minimum Connection
2 1/2" - Answers -Bottom Blow-Off Maximum Connection
2 1/2" - Answers -Surface Blow-Down Maximum Connection
3" - Answers -Threaded Safety Valve Maximum Connection
4 1/2" - Answers -Flanged Safety Valve Maximum Connection
Up to 2" - Answers -Steam Stop Valve Non-Indicating
1/2" - Answers -Take-off for Control Line Minimum Connection
3" - Answers -Socket Welded Fitting Maximum Size
2 1/2" and over - Answers -Hangers Must be Adjusted Over
1/4" - Answers -Minimum Size Syphon Non-Ferrous
350 psi - Answers -Malleable Iron Maximum PSI
250 - Answers -Cast Iron Maximum PSI
250 Degrees - Answers -ASME V Maximum Water Temperature Heating Boiler
500 Square Feet of Heating Surface (2 means of water feed) - Answers -When do you
need 2 or more heating safety's?
Over 400 psi (cast iron sectional/MAWP 30psi) - Answers -When do you need 2 sight
glasses?
, 30 - Answers -The ASME code for heating boilers says that an ASME code, Section
VIII expansion tank is required on a hot water boiler when the boiler pressure exceeds
what pressure (psig)?
Steel - Answers -When the pressure exceeds 100 psi, the boiler blow-off fittings shall
be_____________?
Not be restricted or reduced - Answers -The discharge outlet of a safety valve must
________________________.
20 - Answers -An Altitude gauge is required on a hot water supply boiler when altitude
is more than ______ feet.
Gate - Answers -The most appropriate valve application for a surface blow-off system
would be a __________ valve.
Auxiliary low-water cut-off - Answers -Which device shall cause a safety shut-down
(lockout) requiring a manual reset?
3/4" - Answers -What is the minimum size of the drain pipe and the blow-off valve
required on a low water cut-off that has a separate float chamber? __________ inches
Gate - Answers -The valve that offers the least resistance to flow is the ____________
valve.
Cross Tee fitting - Answers -What type of fitting must be placed in the water piping
connection at every right angle to facilitate cleaning and inspection of a water column or
low water cut-off?
21 - Answers -The maximum suggested pipe support spacing (span) for 6" pipe for
steam, gas or air service is ________ feet,
1 1/2 - Answers -The dial of the pressure gauge on a high pressure boiler shall be
graduated to no less than _________ times the pressure at which the safety valve is
set.
1/2" - Answers -When piping a steam pressure gauge, what is the minimum pipe size
connection to the boiler where steel or wrought iron pipe or tubing is to be used?
Condensate in the steam line - Answers -Water Hammer in steam lines is caused by
what condition?
3/4" - Answers -522 CMR 16.00 Automatic Controls for Automatically Fired Boilers,
requires that when multiple pressure controls are mounted on or fed from manifold, the
manifold and common source connection to the boiler shall be at least what pipe size?
(HEATING, COOLING) PJ-01QUESTIONS 2026
1/2" - Answers -Sight Glass Minimum Connection
3/4" - Answers -Low Water Cut-off Draw Minimum Connection
1" - Answers -Water Column Minimum Connection
3/4" - Answers -Control Manifold Minimum Connection
1/4" - Answers -Sight Glass Drain Minimum Connection
1" - Answers -Bottom Blow-Off Minimum Connection
2 1/2" - Answers -Bottom Blow-Off Maximum Connection
2 1/2" - Answers -Surface Blow-Down Maximum Connection
3" - Answers -Threaded Safety Valve Maximum Connection
4 1/2" - Answers -Flanged Safety Valve Maximum Connection
Up to 2" - Answers -Steam Stop Valve Non-Indicating
1/2" - Answers -Take-off for Control Line Minimum Connection
3" - Answers -Socket Welded Fitting Maximum Size
2 1/2" and over - Answers -Hangers Must be Adjusted Over
1/4" - Answers -Minimum Size Syphon Non-Ferrous
350 psi - Answers -Malleable Iron Maximum PSI
250 - Answers -Cast Iron Maximum PSI
250 Degrees - Answers -ASME V Maximum Water Temperature Heating Boiler
500 Square Feet of Heating Surface (2 means of water feed) - Answers -When do you
need 2 or more heating safety's?
Over 400 psi (cast iron sectional/MAWP 30psi) - Answers -When do you need 2 sight
glasses?
, 30 - Answers -The ASME code for heating boilers says that an ASME code, Section
VIII expansion tank is required on a hot water boiler when the boiler pressure exceeds
what pressure (psig)?
Steel - Answers -When the pressure exceeds 100 psi, the boiler blow-off fittings shall
be_____________?
Not be restricted or reduced - Answers -The discharge outlet of a safety valve must
________________________.
20 - Answers -An Altitude gauge is required on a hot water supply boiler when altitude
is more than ______ feet.
Gate - Answers -The most appropriate valve application for a surface blow-off system
would be a __________ valve.
Auxiliary low-water cut-off - Answers -Which device shall cause a safety shut-down
(lockout) requiring a manual reset?
3/4" - Answers -What is the minimum size of the drain pipe and the blow-off valve
required on a low water cut-off that has a separate float chamber? __________ inches
Gate - Answers -The valve that offers the least resistance to flow is the ____________
valve.
Cross Tee fitting - Answers -What type of fitting must be placed in the water piping
connection at every right angle to facilitate cleaning and inspection of a water column or
low water cut-off?
21 - Answers -The maximum suggested pipe support spacing (span) for 6" pipe for
steam, gas or air service is ________ feet,
1 1/2 - Answers -The dial of the pressure gauge on a high pressure boiler shall be
graduated to no less than _________ times the pressure at which the safety valve is
set.
1/2" - Answers -When piping a steam pressure gauge, what is the minimum pipe size
connection to the boiler where steel or wrought iron pipe or tubing is to be used?
Condensate in the steam line - Answers -Water Hammer in steam lines is caused by
what condition?
3/4" - Answers -522 CMR 16.00 Automatic Controls for Automatically Fired Boilers,
requires that when multiple pressure controls are mounted on or fed from manifold, the
manifold and common source connection to the boiler shall be at least what pipe size?
