Tpc 345 Flashcards
What measurement is used to measure pipe that has a fitting at only one end?
End-to-center measurement
What is the symbol for a flanged tee?
2 parallel lines on each leg of the tee
What kind of flanges are used to seal the end of a pipe?
Blind flanges
What does NPSC mean?
Straight internal pipe threads
What do the last two numbers that proceed the thread code mean?
The nominal pipe size and number of threads per inch
What is the pitch of a thread?
It is the distance from a given point on one thread to the same point on the next thread measured parallel to the axis ( pipe center line).
What size of pipe can ratchet threaders be used on?
Pipe up to 6in. In diameter
What size pipe are socket-welding fittings used for?
Joining pipes 4in. In diameter or less
Should you use a ring made from a material not compatible with the pipes to be welded?
Never
What is squareness?
It’s a term used in piping to indicate that one pipe or flange forms a 90 degree angle with another
Why must you use the 2 hole method?
The holes will be aligned correctly when the rolling offset is made.
The gap between two pieces of pipe is usually?
3/16 in.
What are the advantages of using thermoplastic pipe?
It can carry corrosive chemicals without damage to the pipe material and it’s highly resistant to corrosion
What is the accepted term for fiberglass reinforced pipe?
RTRP
What is the range of time for curing solvent cement?
Anywhere from a half hour to about four hours
