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Question 1

Which of the following valve materials is the best choice for service conditions that include high pressures, high temperatures, and a corrosive fluid?

Answer 1

Stainless steel

Question 2

If a valve must be removed frequently for service or repair, the valve to-pipe connection should be

Answer 2

Threaded

Question 3

The first step in stopping leakage around the stuffing box of a gate valve is to

Answer 3

Tighten the gland bolt nuts

Question 4

If the stem of a globe valve does not move freely, one likely cause is a

Answer 4

Damaged spot on the thread

Question 5

What is usually the first indication of a valve problem?

Answer 5

Leakage

Question 6

The first part of a diaphragm valve to wear out is usually the

Answer 6

Diaphragm

Question 7

What causes a pop safety valve to open?

Answer 7

Pressure rising above a preset level

Question 8

most pop safety valves, pressure and temperature conditions are usually limited to

Answer 8

250 psi and 450°F

Question 9

Chatter in pop safety valves is caused by a ___ volume of flow at a ___ pressure

Answer 9

Low; High

Question 10

What part of a safety relief valve contains the pressure that opens the valve?

Answer 10

A huddling chamber

Question 11

A mechanism used to open or close a valve is called an

Answer 11

Actuator

Question 12

The maximum air pressure for pneumatic diaphragm actuators is approximately

Answer 12

125 psig

Question 13

Which of the following devices is used to measure fluid pressure?

Answer 13

Bourdon tube gauge

Question 14

Which of the following indicates flow rate by producing an electrical signal?

Answer 14

Turbine flow meter

Question 15

Accumulators are used for

Answer 15

Storing pressure

Question 16

Applications that call for fully opened or fully closed positions are best handled by a ___ valve

Answer 16

Gate

Question 17

The valve best suited for regulating flow is the ___ valve

Answer 17

Angle

Question 18

Which of the following valve materials is most likely to be used in high-pressure, high-temperature conditions?

Answer 18

Steel

Question 19

The marking “WOG” on the body of a valve stands for

Answer 19

Cold water oil gas

Question 20

Flanged joints require the use of ___ to create an effective seal

Answer 20

Gaskets

Question 21

One of the most common signs of insulation failure in steam lines is

Answer 21

Leakage

Question 22

Condensate in a steam tracing system should be drained to the

Answer 22

Collection header

Question 23

One of the disadvantages of electric tracers is that they

Answer 23

Require constant monitoring

Question 24

The simplest and surest way to protect an exposed water line from freezing is to

Answer 24

Drain the line

Question 25

Which of the following is an example of passive corrosion protection?

Answer 25

Installing a pipeliner