Plumbing Inspection Section#1 Supply Plumbing Quiz#4

You should have finished Study Session 3 before starting this study session. This study session deals with water pressure regulators and with supply plumbing in houses.

The estimated completion time is one and a half hours.

Objectives
At the end of this study session, you should be able to:

• Describe in one sentence the location and function of a pressure bypass or relief in conjunction with a pressure regulator.
• Describe in one sentence the location and function of a pressure bypass or relief in conjunction with a pressure regulator.
• List six problems commonly found with pressure regulators.
• List seven different materials used for supply piping.
• List the time frames when these different types of pipe were used.
• Describe the weaknesses and strengths of each type of pipe.
• List four common problems with supply piping.

• Question 1

  Needs Grading

  	List five materials used as water supply piping.
  	Selected Answer: 1. Copper 2. Galvanized steel 3. Brass (yellow and red are different types) 4. Stainless steel 5. Polybutylene 6. CPVC 7,. Polyethylene Correct Answer: - Galvanized Steel - Copper - Polybutylene (PB) - Polyethylene (PE) - CPVC (Chlorinated Polyvinylchloride) - Brass (an alloy of tin and zinc) - Stainless steel Response Feedback: [None Given]

• Question 2

  Needs Grading

  	List three causes of rust on a regulator.
  	Selected Answer: 1. A leaking regulator 2. Sweating piping or regulator 3. A damp environment 4. Regulator buried in damp soil Correct Answer:   - A leaking regulator - Sweating piping or regulator - A damp environment or - The regulator is buried in damp soil Response Feedback: [None Given]

• Question 3

  Needs Grading

  	List two methods of determining the difference between brass and galvanized steel piping.
  	Selected Answer: 1. Scratch to reveal the yellow or orange surface.  2. Using a magnet. Galvanized steel will attact a magnet while brass won't.  Correct Answer:   - Brass piping is yellow or orange in color and galvanized steel piping is gray. - Galvanized steel will attract a magnet while brass will not. Response Feedback: [None Given]

• Question 4

  Needs Grading

  	What are the two types of supply piping that have threaded connections?
  	Selected Answer: 1. Galvanized steel 2. Brass Correct Answer:   Galvanized steel and brass Response Feedback: [None Given]

• Question 5

  Needs Grading

  	What is the color of CPVC supply piping?
  	Selected Answer: White (Beige) Correct Answer:   White or Beige Response Feedback: [None Given]

• Question 6

  Needs Grading

  	What is the purpose of a water pressure regulator?
  	Selected Answer: To reduce the supply pressure to 80PSI, typically.  Correct Answer: In houses where the municipal water pressure may exceed 80 (or 100) psi, a pressure regulator will be installed to reduce the supply of pressure to 80 psi, typically. Response Feedback: [None Given]

• Question 7

  Needs Grading

  	What is the special connector called which prevents this occurrence?
  	Selected Answer: Pressure relief valve Correct Answer:   Di-electric connector Response Feedback: [None Given]

• Question 8

  Needs Grading

  	What occurs when copper piping is directly connected to steel piping?
  	Selected Answer: Corrosion would happen as the result of galvanic action Correct Answer:   Galvanic action will cause the steel to rust. Response Feedback: [None Given]

• Question 9

  Needs Grading

  	Where does galvanized steel piping usually rust through first?
  	Selected Answer: inside Correct Answer:   At the threaded connections Response Feedback: [None Given]

• Question 10

  Needs Grading

  	Where is the pressure regulator typically installed?
  	Selected Answer: Immediately downstream of main shut-off valve Correct Answer:   Immediately downstream of the main shutoff valve. Response Feedback: [None Given]

• Question 11

  Needs Grading

  	Which two of the three grades of copper pipe can be used underground?
  	Selected Answer: Type L and  Type K Correct Answer:   Types L and K Response Feedback: [None Given]

• Question 12

  Needs Grading

  	Why is a bypass necessary if a pressure regulator is installed?
  	Selected Answer: It is used to relieve the pressure built in house which is bigger than city side.  Correct Answer:   To allow excess pressure in the plumbing system to be dissipated through the water service pipe out into the city mains. Response Feedback: [None Given]

• Question 13

  0 out of 0 points

  	When was copper supply piping first used?
  	Selected Answer:   1930's Answers: 1850's 1900   1930's 1960's 1990 Response Feedback: Good work

• Question 14

  0 out of 0 points

  	Connections with galvanized steel supply piping must always be threaded.
  	Selected Answer:  True Answers:  True False Response Feedback: Good work

• Question 15

  0 out of 0 points

  	Polybutylene supply piping resists freezing better than copper supply piping.
  	Selected Answer:  True Answers:  True False