Test 1 Flashcards
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 the altitude is more than ______ feet
20
The most appropriate valve application for a surface blow down system would be a ________ valve.
Gate
Two or more safety valves must be used in a steam heating boiler when the size of the boiler safety or safety relief valve larger than how many inches in diameter?
4-1/2
The appropriate valve application for a boiler blow off valve on a high pressure boiler is _______.
Y-type globe
Which form of safety valve mounting is not permissible in the heating boiler code?
To an internal pipe in the boiler.
Which of the following statements is true regarding a boiler water column.
Reduces the turbulence of water to give a more accurate reading in the gage glass.
Two low water cut-offs are required on a steam heating boiler when
The boiler has pumped condensate returns.
Boiler blow down tanks are
Considered as non-boiler external piping
When piping up low water fuel cut-off devices to a boiler. The devices must be piped to what height in relation to the level of the gauge glass?
No lower than the visible part of the gage glass.
A 3/4” blowoff may be used on a high-pressure boiler if the boiler heating surface has less than ________ sq feet on heating surface.
100
Which device shall cause a safety shutdown (lockout) requiring a manual reset?
Auxiliary low water cut-off
The required boiler feed water stop valve on a high-pressure boiler is located between the ________ and the ___________.
Boiler, check valve
The return pipe connections of each boiler supplying a gravity return steam heating system shall be so arranged as to form a loop so that the water in each boiler cannot be forced out below the safe water level. This loop is most commonly known as a ________.
Hartford steam loop
The purpose of a flash tank is to
Recover steam and condensate
