P99 LOW PRESSURE BOILERS
CH.4 EXPECTED QUESTIONS AND
100% CORRECT ANSWERS
Boiler main steam stop valves should be ____ valves.
gate
Gate valves should always be _____ or _____ closed.
Wide open; completely
All boilers in battery must have two main steam stop
valves or one main steam stop valve and one ______ .
automatic nonreturn valve
When open, an os&y gate valve offers ______ to the
flow of steam.
no resistance
Steam traps are _____ devices.
automatic
______ allow movement caused from the heating and
cooling of steam lines.
Expansion bends
Steam traps remove ____ and ____ from the steam
lines.
air; water
Condensate in the steam lines can result in ________.
water hammer
A _____ valve is a type of globe valve that allows a
boiler to be cut in on-line automatically when the
boiler pressure is at or above the head pressure.
nonreturn
CH.4 EXPECTED QUESTIONS AND
100% CORRECT ANSWERS
Boiler main steam stop valves should be ____ valves.
gate
Gate valves should always be _____ or _____ closed.
Wide open; completely
All boilers in battery must have two main steam stop
valves or one main steam stop valve and one ______ .
automatic nonreturn valve
When open, an os&y gate valve offers ______ to the
flow of steam.
no resistance
Steam traps are _____ devices.
automatic
______ allow movement caused from the heating and
cooling of steam lines.
Expansion bends
Steam traps remove ____ and ____ from the steam
lines.
air; water
Condensate in the steam lines can result in ________.
water hammer
A _____ valve is a type of globe valve that allows a
boiler to be cut in on-line automatically when the
boiler pressure is at or above the head pressure.
nonreturn
