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147 Cards in this Set
- Front
- Back
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What type of copper tubing joint requires the use of a ferrule?
A. Welded C. Soldered B. Compression D. Beaded |
B. Compression
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What type of copper tubing is not identified by color on the tubing itself?
A. Soft tempered C. Extra hard B. Hard drawn D. Annealed |
A. Soft Tempered
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The pipe fitting which makes a 180degree turn is called a/an______.
A. Eight pipe C. Return pipe B. lateral pipe D. Elbow |
C. Return Pipe
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The final step in the galvanizing of pipe is to dip the pipe into a bath of molten ________.
A, Mercury C. Antimony B. Aluminium D. Zinc |
D. Zinc
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Which of the following is not a reason to use stud bolts instead of machine bolts for bolding flanged piping joints?
A. the stud bolt is more easily removed if corroded B. The stud bolt is stronger than a machine bolt of the same size and material C. Confusion with other bolts at the job site is avoided D. Stud bolts in the less frequently used sizes and materials can be readily made from round stock |
B. The stud bolt is stronger than a machine bolt of the same size and material
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Where should the pressure enter a globe valve?
A. Over the seat B. Depends on the desired action if the disc or plug becomes detached from the stem. (fail open or fail closed) C. Does not matter D. Under the seat |
B. Depends on the desired action if the disc or plug becomes detached from the stem (fail open or fail closed)
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In a piping installation allowing for expansion in two directions, how should the anchor(s) and guide(s) be positioned relative to each other?
A. Anchor, guide, anchor B. Anchor, anchor, guide C. Guide, anchor, guide D. no guides required |
C. Guide, anchor, guide
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What are 3 fuel gases used for heating pipe or tubing?
A. acetylene, propane, and argon B. MAPP, acetylene, and propane C. Argon, MAPP, and acetylene D. Propane, argon, and MAPP |
B. MAPP, Acetylene, and propane
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The purpose of the foot switch on a power-operated pipe cutting and threading machine is to:
A. control the speed of the motor B. leave the operator's hands free to hold the pipe C. act as a safety device to shut off the motor if the operator's foot is removed from switch D. reverse the rotation of the motor |
C. act a s a safety device to shut off the motor if the operators foot is removed from the switch
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Which of the following is not a reason for using cutting oil when threading pipe?
A. To protect the threads from rust B. To reduce friction C. To remove heat D. To prevent metal chips from adhering to the dies |
A. To protect the threads from rust
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When is it safe to remove the old packing from a valve that is under pressure?
A. When the valve is completely open B. When the valve is completely closed C. When the valve is back seated D. Never |
D. Never
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The color code for type "K" copper tube is:
A. Blue B. Green C. Red D. Yellow |
B. Green
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Identify the copper fitting shown in the figure below
A. Coupling adapter B. CX FM adapter C. CX M adapter D. Dielectric adapter |
B. CX FM adapter
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The correct wat to order the reducing tee shown in the figure below is
A. 1" x 1 1/2" x 2" B. 1 1/2" x 1" x 2" C. 2' x 1 1/2" x 1" D. 2" x 1" x 1 1/2" |
D. 2" x 1" x 1 1/2"
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Which of the follow types of copper tube has the smallest wall thickness?
A. M B. DWV C. K D. L |
B. DWV
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What type of pipe hanger is shown below?
A. double eye nut B. Clevis C. Split ring hanger D. Double bolt pipe clamp |
C. Split ring hanger
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The proper name for the clam shown below is:
A. Top beam B. "J" hook C. Swivel adjuster D. Socket |
B. "J" hook
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The proper name for the hanger shown below is:
A. Ring swivel B. Band C. Clevis D. Split |
C. Clevis
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What can you use when cutting steel pipe?
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Use torch, band saw, hacksaw etc- wheel cutters give straight cut but pipe must be reamed
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What methods can you use when joining steel pipes?
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screw, welded, flanged, grooved, compression
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_______ fittings prevent electrolysis and current flow.
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Dielectric Fittings
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_______ is the name for the lowest temperature that alloy becomes completely liquid.
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Liquidus
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Steel pipe comes ____ feet plus or minus ____ inch.
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21' plus or minus 1"
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A standard set of pipe nipples contains _____ nipples, from _____ inch in 1/2" gradation.
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11 nipples, from 6"
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Pipe nipples above 2" diam. sometimes come in sets from close to _____inches.
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12 inches
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______ are 10, 20, 40, 80, and 120. O.D. stays the same I.D changes.
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Pipe Schedules
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True or false: All pipe to be installed so that markings are clearly visible for inspection.
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True
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True or false: Soldering copper joints should be soldered ASAP and wiped clean of excess flux.
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True
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What is Capillary Action?
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liquid being drawn into small spaces between wet surfaces. It permits upside down joint.
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True or false: Capillary Action involves heat.
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False - Has noting to do with heat.
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True or false:
For copper to copper no flux is needed |
True
Phosphorous acts as the flux. |
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What does Flux do?
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It chemically cleans surface to be soldered or brazed and promotes wetting.
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Is flux corrosive?
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Yes
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When using Flux you must always apply what first to the pipe, then the fitting socket.
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heat to the pipe first, then the fitting socket
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When joining copper it can be
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soldered, brazed, flared compression grooved welded.
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ACR tube is measured by _____. all others ______.
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O.D. all other I.D.
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Solders melts at ______degrees to ______ degrees.
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300degrees to 600degrees F.
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Brazing alloys melts at _____degrees to ________degrees F.
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1100degrees to 1500 degrees F.
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Soldering is below or above 840 degrees F.
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below
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Brazing is below or above 840 degrees F.
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above
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Because PVC has a high expansion rate, it may require ______ on long runs and ___________.
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it may require expansion joints on long runs, and additional support.
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PVC primer is designed to what?
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It is designed to soften the plastic for better adhesion , creating a solvent weld.
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What three tools can you use to cut plastic pipe?
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tubing cutters, saw, etc.
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What four tools can be used to cut cast iron?
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wheel cutters, snap, ratchet, saw etc. inside wheel cutters hammer and chisel.
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Cast iron schedules are
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extra heavy, service weight- hub and spigot and no hub
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when joining cast iron use
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lead and oakum 1"min. depth of NYC code.
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_______ makes joint water and gas tight, expands when wet, because of bentonite.
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Oakum
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In cast iron joining, _______ takes place of lead and oakum.
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push gasket
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Most codes require _______ ______ for services, water heaters, risers, and equipment etc.
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full port (full open)
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When discussing valves, a globe is used to...
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regulate flow
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When discussing valves, what is a gate?
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Gates are either fully open or fully closed- non rising stem. OS&Y - quick closing. unreliable after a few years.
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_____ valve either fully open or fully closed; 1/4 turn; synthetic seats; full standard or reduced port. 3 piece; -positive shut; reliable; self cleaning
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Ball Valve
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_____ valve is a safety device that controls excess pressure and temperature.
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Relief valve
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____ valve controls direction of flow. Swing, lift and ball.
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Check vavle
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________ Valves prohibited underground in NYC & UPC code
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Stop and Waste Valves
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______ valves are balancing.
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Butterfly valves
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Joining methods for valves include:
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flanged, threaded, sweat, glue, brazed compression and grooved.
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____ ____ are mechanical shock absorbers. NYC code- no air chambers.
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Air Chambers
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What type of valve is used to reduce flow on a circulator pump?
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Flow Control
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Valves should be installed in the vertical or horizontal position, and in a readily accessible locations
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vertical
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What type of valve is a gas cock?
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A plug valve
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What must be installed upstream of a pressure regulator?
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A Control valve.
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Uniform lengths of steel pipe are considered to be:
A. 20 feet long B. 20 feet long + or - 1/2 inch C. 21 feet long D. 21 feet long + or - 1 inch |
D. 21 feet long + or - 1 inch
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Sizes of pipe are identified by a measurement called the ____ pipe size.
A. invert B. ASTM C. nominal D. standard |
c. nominal
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Which schedule pipe would have the smallest inside diameter?
A. 10 B. 40 C. 80 D. 120 |
D. 120
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The name of all segments of dies used for cutting treads are called:
A. teeth B. chasers C. wheels D. heads |
B. chasers
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List four common methods of joining steel:
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compression, flanged, threaded, grooved, welded
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Steel pipe is supplied with the following end finishes:
A. PE BEV B. T & C C. TBE D. All of the above |
D. all of the above
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The proper flange a journeyman would use to close off the end of a piping system is a :
A. socket type flange B. threaded flange C. blind flange D. slip on flange |
C. blind flange
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List the four factors that must be considered when deciding on the type of pipe to be installed on a specific job:
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1. Pressure
2. Temperature 3. Friction loss 4. Code requirements 5. Environment 6. Vibration 7. Fire rating |
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Flanges are made in sizes as small as:
A. 1/2 inch B. 3/4 inch C. 1 inch D. 1 1/4 inch |
A. 1/2 inch
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The purpose of an orifice flange in a piping system is to:
A. reduce system pressure B. increase system pressure C. measure system flow D create pressure drop |
C. measure system flow
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Copper tubing used in for domestic water piping is made to what ASTM standard:
A. ASTM B 88 B. ASTM B 306 C. ASTM B 819 D. ASTM B 837 |
A. ASTM B 88
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Which type of copper tube is designated by its outside diameter?
A. K tubing B. L tubing C. ACR tubing D. DWV tubing |
C. ACR tubing
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what joining method for copper tubing requires no preparation of the tube?
A. Flaring B. Soldering C. Compression D. Brazing |
C. Compression
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the maximum temperature for a system using solder joints is:
A. 200 degrees B. 250 degrees C. 300 degrees D. 350 degrees |
250 degrees
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List four methods for joining copper tubing:
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Flaring, soldering, compression, brazing
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copper tubing joints in level one medical gas systems are:
A. soldered B. Brazed C. Flared D. Both A and B |
B. Brazed
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The proper tool to cut copper tubing is:
A. tubing cutter B. Hacksaw C. Portable bandsaw D. All of the above |
D. All of the above
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Solder as a filler metal must have a melting temperature no more than:
A. 620 degrees B. 700 degrees C. 840 degrees D. 900 degrees |
C. 840 degrees
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The proper brazing material used in a copper to copper joint is:
A. BCuP B. Bag C. All of the above D. None of the above |
A. BCuP
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When making a solder or braze joint heat is first applied to the:
A.. Tube B. Front of the fitting cup C. Rear of the fitting cup D. Top of the joint |
A. Tube
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Which type of plastic pipe is used mainly for DWV piping:
A. ABS B. PVC C. CPVC D. PE |
B. PVC
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Only schedule ____ PVC pipe can be threaded
A. 40 B. 80 C. 80 and 120 D. Plastic pipe cannot be threaded |
C. 80 and 120
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PVC piping cannot be roll-grooved
True or false |
False
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Heat fusion can be used to join the following types of plastic pipe:
A. PE only B. PP only C. Both PP and PE D. PVC |
C. Both PP and PE
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What is the proper name for FRP materials?
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fiberglass reinforced pipe (high temps: pressure)
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The push-on joint consist of:
A. rubber gasket B. plain end C. Special bell D. All of the above |
ANS? D?
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List four types of joints used for joining cast iron pipes:
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1. push gasket
2. mechanical 3. lead and oakum 4. no hub |
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A 45 degree tuen cast iron fitting is called a :
A. 1/8 bend B. 1/6 bend C. 1/4 bend D. None of the above |
A. 1/8 bend
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What are the four advantages of cast iron DWV pipe over PVC pipings?
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1. Less noise
2. less hangers 3. will not burn 4. less expansion 5. will not crush 6. recyclable 7. weather proof 8. Low LOCs |
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Dura-iron pipe is used in what type of installations?
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lab waste and acid waste
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The NYC plumbing code, requires that a lead and oakum joint be poured in one continuous pour, to a minimum depth of:
A. 3/4" B. 1" C. 1/2" D. 2 lbs per diameter inch |
B 1"
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The lead ring that keeps the oakum in place, is held in by the:
A. joint runner B. ring binder C. packing iron D. lead groove |
D. lead groove
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When assembling hub and spigot cast iron pipe using compression gaskets, what type of lubricant should be used?
A. silicon spray B. white grease c. water soluble d. cutting oil |
C. water soluble
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The maximum height at which a DWV system should be tested using a hydrostatic test is:
A. 10ft B. 20ft C. 4 story heights D. 30ft |
A. 10ft
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No-hub pipe and fitting manufacturers recommend that substantial bracing to be installed on systems:
A. 3" and larger B. 8" and larger C. 4" and larger D. 5" and larger |
D. 5" and larger
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If a 4" diameter lead joint is poured to the minimum NYC code standard, how much should the lead ring weigh?
A. 3/4 of a lb B. 2 lbs C. 3lbs D. 4 lbs |
C. 3 lbs
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Compression joint gaskets used in cold weather are easier to work with when kept above a temperature at or above:
A. 32degrees F B. 75 degrees F C. 100degrees F D. 50 degrees F |
D 50degrees F
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A combination wye and 1/8th bend is a cast iron fitting that produces a directional change of:
A. 45 degrees B. 60 degrees C. 75 degrees D. 90 degrees |
90 degrees
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the tar-like coating on a cast iron pipe is there to provide:
A. sound proofing B corrosion resistance C. added strength D. a finished look |
B. corrosion resistance
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When pouring a horizontal hub and spigot joint, what prevents the molten lead from pouring out of the joint?
A. lead groove B. joint runner C. lead gate D. high lead temperature |
B. joint runner
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Black steel ground joint unions have a seat made of:
A. mild steel B. boron steel C. brass D. nylon |
C. brass
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The term nominal pipe size refers to the pipes:
A. outside diameter B. wall thickness C. inside diameter D. schedule |
C. inside diameter
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One of the ingredients in cutting oil, that allows it to lubricate better while threading is:
A. duck butter B. Teflon C. Sulfer D. WD-40 E. lubeaderm |
C. sulfer
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The stock that cuts the deepest threads first uses which type of dies?
A. quick opening B. receding C. drop head D. full width |
B. receding
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When working in tight places, what tool would best be suited for tightening screw pipe?
A. monkey wrench B. straight wrench C. end pattern wrench (offset wrench) D. fluted wrench |
C. end pattern wrench
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When imperfect threads are cut with a stock, it is most likely caused by:
A. one or more defective dies B. not enough cutting oil C. metal chips in the dies D. a, b, and c. |
D. a,b and c
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A 4" pipe die will cut how many threads per inch?
A. 10 B. 12 C. 14 D. 8 |
D. 8
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Another name for pipe dies is:
A. tapers B. chasers C. drop heads D. cut grooved E chippers |
B chasers
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It is recommended that schedule 10 black steel tube be:
A. never grooved B. cast grooved C. cut grooved D. roll grooved |
D. roll grooved
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How many threads per inch does a 1/2" pipe die cut?
A. 27 B. 14 C. 8 D18 |
B 14
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What abbreviation identifies the standard pipe thread that we use?
A. UNC B. NPT C. SPT D. ASME E. APT |
B. NPT
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What type of dies does a 65 R pipe threader use?
A. fluted B full width c. chamfered d. receding |
d. receding
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On Victaulic piping systems, gasket pinching can be prevented by:
a. lubricating the gasket b. proper bolt torque c. proper bolt length d. folding the gasket edges |
a. lubricating the gasket
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Pipe threaders up to and including 2" diameter normally use what type of dies?
a. receding b. self lubricating c. chip proof d. full width |
d. full width
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What provides a gas and water tight seal between male and female threads on screw pipe systems?
a. compound b. the pipe thread is tapered c. neither thread is tapered d. both threads are tapered e. the fitting is tapered |
d. both threads are tapered
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The best definition of fitting allowance, is the distance between -
a. face of fitting to center b. crotch of fitting to center c. end of pipe to center of fitting d. end of pipe to crotch of fitting |
C. end of pipe to center of fitting
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True or false:
A spiral reamer should never be used with power-driven equipment |
true
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True or false
All fittings have a fitting allowance |
true
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True or false
All fittings gave an engagement (make-up) |
False
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True or false
only drainage pipe must be reamed |
false
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Compound leverage wrenches are designed to:
a. work in tight places b. tighten smooth pipe c. remove odd shaped pipe d. increase mechanical advantage |
d. increase mechanical advantage
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To make up pipe that is against a wall or between other pipe runs, it is best to use a :
a. compound wrench b. end pattern wrench c. basin wrench d. spud wrench |
b. end pattern wrench
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When using a wheel cutter to cut pipe in a tight space, it is recommended to use a:
a. wide roll cutter b. thin wheel cutter c. three wheel cutter d. heavy duty cutter |
C. three wheel cutter
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The inside diameter of pipe is generally used to identify its ___ size
a. normal b. nominal c. diameter d. hydraulic |
B nominal
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The depth of the thread can be changed when it is too shallow by using:
a. deep cut stock b. open end stock c. an adjustable stock d. full width stock |
c. adjustable stock
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A degree of pipe thread taper of 1 in 16 is a change in diameter of _____ per foot of thread length.
a. 1/2" b. 3/4" c. 1/4" d. 1" |
b 3/2"
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The schedule or weight of a pipe refers to its:
a. material b. inside diam c. wall thickness d.manufacturing process |
C wall thickness
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What is the main purpose of applying pipe compound?
a. lubricate the joint b. seal the joint c. stop corrosion d. save time |
a. lubricate the joint
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When making up screw pipe fittings, how many imperfect threads should be visible outside the fitting?
a. 1 to 2 b. 2 to 3 c. 3 to 4 d. determined by the pipe diameter |
d. determined by the pipe diameter
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The difference between pipe and tubing is that pipe:
a. is more commonly used b. can accept a thread c. can accept a fitting d. takes longer to join |
b . can accept a thread
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Pipe is used to convey many solids, liquids, or gases. Cast iron, clay, and cement pipe is used to convey:
a. potable water b. natural gas c. sewage d. compressed air |
c. sewage
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The NYC Plumbing Code requires that all pipes be reamed. This is done to:
a. restore the inside diameter b. remove metal chips c. strengthen the pipes d. enlarge the pipe |
A. restore the inside diameter
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The steep pipe most commonly used in our industry is made from:
a. carbon steel b. structural steel c. pipe grade steel d. boron steel |
a. carbon steel
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A wide roll pipe cutter is designed to be used with:
a. pipe over 8" diam b. power equipment c. hand threading d. extra heavy pipe |
b. power equipment
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The ASTM number for the steel pipe that is more commonly used in out industry is:
a. ASTM - B88 b. ASTM - A53 c. ASTM - A 17 d. ASTM - UA4 |
B. ASTM - A53
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Too much ____ has been known to cause damage to valves and other equipment in a piping system:
a. taper b. calibration c. compound d. truncation |
c. compound
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What is the standard pressure rating for cast iron fittings?
a. 250 psi b. 150 psi c. 185 psi d. 125 psi |
d. 125 psi
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An alloy of 85% copper and 15% zinc is also known as:
a. muntz metal b. yellow brass c. red brass d. polished brass |
c. red brass
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The letter "E" stamped on pipe represents what type of steel?
a. furnace butt welded b. extrusion pass welded c. electric resistance welded d. two pass contact welded |
B. electric resistance welded
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The only difference between schedule 40 pipe and schedule 80 pipe is:
a. only schedule 8 can be welded b. the ID is different c. the OD is different d. different stocks required |
B. the ID is different
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The abbreviation for American Standard Taper Pipe thread is:
a. NPT B. ASTP C. APT D. AST |
A. NPT
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What type of flange joining system is normally used for low pressure?
a. raised faced b. two faced c. grooved faced d. flat faced |
d. flat faced
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Hot rotary piercing and extrusion are two methods of producing steel pipe. What type of pipe is made using these methods?
a. seamless pipe b. butt welded pipe c. seamed pipe d. EXTR-pipe |
a. seamless pipe
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Which type of gasket would a flat faced flange require?
a. ring b. flat faced c. composite d. full faced |
d. full faced
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All fittings have a:
a. make up b. take off c. thread engagement d. socket |
b take off
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