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63 Cards in this Set
- Front
- Back
What are the types of copper used in the plumbing industry? What are there colors? Which is the thickest and which is the thinnest |
Type K, green, thickest Type L, blue Type M, red, thinnest D-wv, yellow Type K(green) or L (blue) Medical gas |
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What is the most common type of copper used or sold in Canada |
Type M |
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Which type of copper tube will withstand the greatest bursting pressure |
Type K |
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Which type of copper tubing is manufactured only as hard drawn |
Dwv |
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In the plumbing trade, copper water tube sizes are commonly specified by |
Their nominal inside diameter |
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In the gas fitting and Refrigeration trades, copper tubing sizes are commonly specified by |
Their exact outside diameter |
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What is the main difference between soldering and brazing |
Temperature soldering below 840 degrees Fahrenheit and brazing is hotter |
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95 - 5 solder contains |
95% tin , 5% antimony |
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What would be required when brazing dissimilar metals? An example would be when brazing copper to Brass |
High temperature flux |
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What is an expansion Loop used for? What would you have to take into consideration when making an expansion loop with copper |
Expansion, the loop should be large enough to prevent any expansion |
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What temperature do fluxes for brazing begin to melt at |
800 - 900 degrees Fahrenheit |
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A good flame for oxy acetylene brazing would be |
Neutral |
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What do you not require when Brazing Alloys used for joining copper tubing to Copper fittings |
Does not require flux |
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To "anneal" copper means to make it |
Soft |
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Standard steel pipe is classified according to size by using the nominal diameter for all sizes from 1/8" up to and including |
12 inch |
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What is the number of threads per inch or a 3/4 NPS pipe |
14 |
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What is Galvanized Steel coated with |
Zinc |
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Why is ductile iron pipe commonly lined with cement |
To prevent corrosion |
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Which black iron pipe designations would be the thinnest |
STD |
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To prevent black iron pipe from rusting during Transit, it's coated with |
Lacquer |
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What does the term "pickling" refer to when dealing with pipe |
Acid Bath |
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Grooves for joining steel pipe can be made by |
Rolling or cutting |
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Which letters do not designate pipe |
XL |
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ABS pipe is used principally for |
Non pressure drainage of liquid and solid waste |
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When joining PEX using crimp Rings, how far back from the end of the tube should the crimp ring be attached |
1/8 in - 1/4" |
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Abs and PVC are classified as |
Thermoplastics |
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True or false plastic pipe must be protected from ultraviolet light |
True |
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If you thread schedule 80 PVC pipe, by how much would you be reducing the pressure rating |
50% |
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What is the sequence when joining poly e (butt fusion) |
Cut pipe, insert into jig and shave end Square, clean end with acetone |
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Threaded drainage fittings in a vertical cast iron stack are tapped to provide |
A slope of 1/4 inch foot |
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A 1/8 Bend refers to a cast-iron fitting used to change direction by |
45 degrees |
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Which type of hanger would be best suited for supporting a 6 inch horizontal cast iron soil pipe |
Adjustable Clevis |
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Which of the following hanging this would be best suited for use on the 6 inch galvanized cold water line |
8 inch clevis hanger with insulation Shield |
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What type of hanger would you use to hang steam lines |
Roller hanger |
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What type of hanger would you use to support multiple Pipelines |
Trapeze hanger or Unistrut |
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What would be used to prevent a clevis hanger from crushing the insulation on a chilled water line |
Insulation Shield |
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Ready rod for pipe hangers is commonly threaded into what type of device when it's to be suspended from a steel I beam |
Beam clamp |
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Which of the following valve's would create the greatest friction loss when fully open |
Straight pattern globe valve |
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Which is better for throttling, a globe valve or a gate valve |
Globe valve |
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When bypassing a pressure-reducing valve it is advisable to use a |
Globe valve |
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Which would be the most common valve used for throttling flow |
Needle valve |
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The hex nut on the side of a check valve serves to |
Remove the pin and disc |
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Which type of valve is commonly used for food process applications |
Diaphragm valve |
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If a solenoid valve is installed in a liquid system, what holds it closed |
Hydraulic force and a spring |
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The thread cut on a pipe is known as |
Male taper thread |
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The lead on the Chasers allow what |
Allows the dies to start on the pipe |
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Pipe dope is applied to pipe threads primarily to |
Lubricate the threads |
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Which material would not be suited for draining acid waste |
Lead |
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What is the correct naming sequence for describing a tee fitting |
Larger opening run, smaller opening run branch |
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How would you connect a piece of PVC pipe to asbestos cement pipe |
Mechanical joint |
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How is concrete bell and spigot pipe assembled |
Lube the spigot and the gasket in the Bell and then you put the pipe together and use a pry bar |
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What are four steps when installing drainage pipe Underground |
Bed it, grade it, test it, flush it |
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Which of the following is a non-ferrous metal |
Tin |
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Which of the following materials would be classified as ferrous |
Cast iron |
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What is tubing gain |
Sometimes called tube stretch or pick up. When bent, tubing seems to stretch or pick up length. Tubing will stretch approximately 1 pipe diameter per 90 Bend |
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The inside walls of pipe should be free of burrs and other obstructions |
To decrease frictional resistance |
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The letters W. O. G stamped on a valve body mean |
Water, oil and gas |
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What is the minimum distance that a balancing valve or flow meter should be installed Upstream of another fitting |
At least five pipe diameters |
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How do you identify the type of gasket required for Groove and shoulder or Victaulic pipe couplings |
Color of gasket, thickness , markings on pipe |
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Name five flanges used in the pipe fitting industry |
Weld neck, socket weld, threaded, slip-on, lap joint, blind, spectacle |
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What is a spool drawing |
Part or section of a larger drawing |
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In pipe fitting, what does a wraparound refer to |
Draw straight line around a piece of pipe |
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In reference to pipe fitting, what is a threadolet |
Forged pipe fitting welded into pipe |