Piping, Plumbing and Welding Flashcards
What type of piping is most often used for cold and hot water lines?
Copper
What is the advantage of plastic piping?
Ease of assembly
What type of joints are used for more flexible pipe design?
Welded joints
Cast iron has a high resistance too?
a)intense pressure
b)Corrosion
c)Shock
d)Water hammering
B) Corrosion
If only expansion joints were used in the pipeline, what part of the line should it be placed in?
Middle of the line
T/F.
After a pipe is cut with a wheel and roller cutter, there is a burr left on the outside?
T
T/F.
Gaskets are added to flanged joints to prevent leaks ?
T
What are some types of characteristics of materials suitable for using as insulation ?
-Long life
-Vermin Proof
-High insulation value
-Ability to retain its shape and insulating value when wet
What are some types of traps?
-Thermodynamic traps
-Thermostatic traps
-Mechanical traps
To reduce the effect of water hammering, suction and discharge lines are often equipped with what?
-Check valves
-Relief valves
-Air chambers
What type of valve is used exclusively for throttling steam?
Globe Valve
What type of gauge is commonly used to indicate steam pressure inside a boiler ?
Bourdon tube
The lowest visible part of the water gauge glass will be above the _________ recommended by the manufacturer ?
Lowest permissible water level
What is the advantage if using a water column ?
It makes the water level easier to read
The blowoff connection on a boiler is made where?
At the lowest point of the boiler
The automatic fill valve is a/an ________ valve, which keeps the system fille with water and maintains a set pressure in the system?
a)Pressure reducing
b)Air vent
c)Back pressure
d)Pressure control
A) Pressure Reducing Valve
