Plastic Pipes Flashcards
What Are some advantages of plastic pipe?
Resistant to most chemicals Unaffected my electronic corrosion High corrosion resistance Less friction loss then other products Absorbs vibration and shock well Is economical Lightweight Easily prefabricated Low absorption rate
What are some disadvantages to plastic pipe
High coefficient of expansion Low tensile strength Creeps, which produces noise and stress on fittings Deforms under load Low heat resistance Low ductility Low fire resistance
What are the two densities of plastic pipe and there abbreviations?
HD = High Density LD = Low Density
Can Plastic pipe be threaded?
Yes.
What rules should you follow when working with threaded pipe?
when threading use a wooden plug in the pipe as to prevent the pipe from collapsing
When threading plastic and metal pipes together make sure the metal pipe is the female end
When using solvent cements how much should you turn the pipe for full engagement? and how long should you hold the pipe in place?
1/8 to a 1/4 turn
hold for 5 to 30 seconds
What does PVC stand for?
Polyvinyl chloride
PVC: Used for? What densities does it come in? What color is it? Joining method? Max Operating temperature
Used for DWV
Used for water servis
Comes in HD and LD
PVC must be gray
Uses solvent cement (gray or clear) and primer (cleaning fluid)
Primer is used to get rid of the shiny surface layer of the pipe
The maximum operating temperature for PVC is 140 degrees F or 60 degrees C
Does PVC melt or burn and what fumes does it emit
When melting PVC emits chlorine fumes (Very toxic)
What does CPVC stand for?
Chlorinated Polyvinyl Chloride
What is CPVC typically used for? What is the maximum working temperature? What joining methods does it use? what fumes are emeted when melting CPVC What densitys does it come in?
Typically used for hydraulic systems or hot and cold supply systems
The maximum operating temperature is 212 degrees F and 100 degrees C
Uses solvent cement and primer or compression fittings. sch 80 can also be threaded
When melting CPVC emits chlorine fumes (Very toxic)
CPVC doesn’t burn or combust it melts
Comes in HD and LD
What does ABS stand for?
Acrylonitrile Butadiene Styrene
What is ABS pipe used for? What is the max working temperature? What joining methods doe it use? what color is it? does it have a high or low coefficient of expansion? does ABS support combustion? what density does it come in?
Used for DWV
Maximum operating temperature is 180 degrees F or 82 degrees C
Uses solvent cement (Yellow) with no primer
ABS DWV pipe is black
High coefficient of expansion
Supports combustion and is very flammable
Only comes in LD
What does PE stand for?
polyethylene
What densities does PE come in?
what is it used for?
What joining methods does PE use?
what is the maximum working temperature
Comes in HD and LD
Used for water service or gas serves
Joined using socket or Butt fusion, barbed fitting, compression fittings and gear clamps
Maximum operating temperature is 130 degrees F or 55 degrees C
