Test #2- Chapter 4~ Plumbing Materials Exam Questions with Correct Answers
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Course
Plumbing
Institution
Plumbing
ABS, PVC and CPVC are examples of thermoplastics commonly used for plumbing pipe and fittings - Answer-True
The maximum operating temperature for industrial PVC is 50c - Answer-False
PEX Pipe is approved for potable hot and cold water supply systems as well as hydronic heating systems, in all...
Test #2- Chapter 4~ Plumbing Materials
Exam Questions with Correct Answers
ABS, PVC and CPVC are examples of thermoplastics commonly used for plumbing pipe
and fittings - Answer-True
The maximum operating temperature for industrial PVC is 50c - Answer-False
PEX Pipe is approved for potable hot and cold water supply systems as well as
hydronic heating systems, in all model of plumbing codes and mechanical codes in
North America - Answer-True
Cast Iron is used for water supply and distribution piping, fire suppression systems,
natural gas systems and heating - Answer-False
Copper Press Fittings are used for above ground water supply applications with types
K, L, and M drawn copper tube - Answer-True
Copper Roll Groove Joint water mains are easier and faster to install than soldered
copper pippinh - Answer-True
No-Hub cast iron soil pipe and fittings are used for underground sanitary drainage,
venting, and storm water drainage applications - Answer-True
Push-on joints are commonly used in underwater crossings, applications requiring large
changes in alignment and grade, and in earthquake prone areas - Answer-False
Malleable iron threaded fittings should not be overheated or welded since fittings will
lose their toughness and ductility - Answer-True
Solid- Wedge Disc Gate Valves should be installed with the valve stem in the vertical
position - Answer-False
The NPC requires that a stop-and-waste valve be installed in the line supplying a
standard outside hose bibb so that it can be isolated - Answer-True
A plug valve is a valve through which water or gas flow is controlled by a circular plug
that fits closely in a machined seat - Answer-True
Check Valves protect potable water from contamination by non potable water - Answer-
False
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