MASSACHUSETTS JOURNEYMAN PIPEFITTER EXAM
(HEATING, COOLING) PJ-01|ACTUAL Qs&As|2025-
2026|+GRADE
When do you need 2 or more heating safety's?
500 Square Feet of Heating Surface (2 means of water feed)
When do you need 2 sight glasses?
Over 400 psi (cast iron sectional/MAWP 30psi)
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)?
30
When the pressure exceeds 100 psi, the boiler blow-off fittings shall
be_____________?
Steel
,The discharge outlet of a safety valve must ________________________.
Not be restricted or reduced
An Altitude gauge is required on a hot water supply boiler when altitude is more
than ______ feet.
20
The most appropriate valve application for a surface blow-off system would be a
__________ valve.
Gate
Which device shall cause a safety shut-down (lockout) requiring a manual reset?
Auxiliary low-water cut-off
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
3/4"
The valve that offers the least resistance to flow is the ____________ valve.
, Gate
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?
Cross Tee fitting
The maximum suggested pipe support spacing (span) for 6" pipe for steam, gas or
air service is ________ feet,
21
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 1/2
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?
1/2"
Water Hammer in steam lines is caused by what condition?
(HEATING, COOLING) PJ-01|ACTUAL Qs&As|2025-
2026|+GRADE
When do you need 2 or more heating safety's?
500 Square Feet of Heating Surface (2 means of water feed)
When do you need 2 sight glasses?
Over 400 psi (cast iron sectional/MAWP 30psi)
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)?
30
When the pressure exceeds 100 psi, the boiler blow-off fittings shall
be_____________?
Steel
,The discharge outlet of a safety valve must ________________________.
Not be restricted or reduced
An Altitude gauge is required on a hot water supply boiler when altitude is more
than ______ feet.
20
The most appropriate valve application for a surface blow-off system would be a
__________ valve.
Gate
Which device shall cause a safety shut-down (lockout) requiring a manual reset?
Auxiliary low-water cut-off
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
3/4"
The valve that offers the least resistance to flow is the ____________ valve.
, Gate
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?
Cross Tee fitting
The maximum suggested pipe support spacing (span) for 6" pipe for steam, gas or
air service is ________ feet,
21
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 1/2
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?
1/2"
Water Hammer in steam lines is caused by what condition?
