Self-Test C-3.3: Describe Piping and Fixture Symbols Used in the Piping Trades

Complete Self-Test C-3.3 and check your answers.

  1. Why are piping symbols used?

Answer:                                                                                                                  

  1. State the two basic requirements for symbols.

Answer:                                                                                                                  

  1. Why are single-line symbols usually used in piping drawings?

Answer:                                                                                                                  

  1. Lengths of valves and fittings in single-line drawings are always drawn to scale.
    1. true
    2. false
  2. Flanged or welded valves and fittings in double line drawings are always drawn to scale.
    1. true
    2. false
  3. The joint in Figure 1 is
    1. screwed
    2. flanged
    3. butt welded
    4. socket welded

 

Figure 1 Illustration for Question 6

 

  1. The joint in Figure 2 is
    1. screwed
    2. flanged
    3. butt welded
    4. socket welded

 

Figure 2 Illustration for Question 7

 

  1. The joint in Figure 3 is
    1. screwed
    2. flanged
    3. butt welded
    4. socket welded

 

Figure 3 Illustration for Question 8

  1. The joint in Figure 4 is
    1. screwed
    2. flanged
    3. butt welded
    4. socket welded

 

Figure 4 Illustration for Question 9

 

  1. The joint in Figure 5 is
    1. screwed
    2. flanged
    3. butt welded
    4. socket welded

 

Figure 5 Illustration for Question 10

 

  1. The symbol in Figure 6 is a
    1. 90° elbow
    2. tee
    3. 45° elbow
    4. union

 

Figure 6 Illustration for Question 11

 

  1. The symbol in Figure 7 is a
    1. 90° elbow
    2. tee
    3. 45° elbow
    4. union

 

Figure 7 Illustration for Question 12

 

  1. The symbol in Figure 8 is a
    1. 90° elbow
    2. tee
    3. 45° elbow
    4. union

 

Figure 8 Illustration for Question 13

  1. The symbol in Figure 9 is a
    1. globe valve
    2. gate valve
    3. check valve
    4. relief valve

 

Figure 9 Illustration for Question 14

 

  1. The symbol in Figure 10 is a
    1. globe valve
    2. gate valve
    3. check valve
    4. relief valve

 

Figure 10 Illustration for Question 15

 

  1. The symbol in Figure 11 is a
    1. globe valve
    2. gate valve
    3. check valve
    4. relief valve

 

Figure 11 Illustration for Question 16

 

  1. The symbol in Figure 12 is a
    1. safety valve
    2. pump
    3. control valve
    4. pressure-reducing valve

 

Figure 12 Illustration for Question 17

 

  1. The symbol in Figure 13 is a
    1. safety valve
    2. pump
    3. control valve
    4. pressure-reducing valve

 

Figure 13 Illustration for Question 18

 

  1. The symbol in Figure 14 is a
    1. safety valve
    2. pump
    3. control valve
    4. pressure-reducing valve

 

Figure 14 Illustration for Question 19

  1. The symbol in Figure 15 is a
    1. safety valve
    2. pump
    3. control valve
    4. pressure reducing valve

 

Figure 15 Illustration for Question 20

 

  1. Draw the right view of the following front views.

Front view

Right view

a.

b.

c.

d.

e.

f.

g.

h.

i.

  1. Identify the symbols A to G in Figure 16.

 

Figure 16 Illustration for Question 21

 

    1.                                                                                          
    2.                                                                                          
    3.                                                                                          
    4.                                                                                          
    5.                                                                                          
    6.                                                                                          
    7.                                                                                          

 

Answer Key: Self-Test C-3.3 is on the other page.

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