You are currently viewing Important Facts: Quiz on Basics of Gate Valves II 7 MCQs with Explanations

Important Facts: Quiz on Basics of Gate Valves II 7 MCQs with Explanations

Gate Valves Quiz

1. What is the primary function of gate valves?

According to the information provided, what is the primary purpose of gate valves?

2. When are gate valves ideal for use?

According to the information, in what applications are gate valves considered ideal?

3. What are the advantages of gate valves?

According to the information, what are the advantages of using gate valves?

4. What is a disadvantage of gate valves?

According to the information, what is a drawback or disadvantage of using gate valves?

5. In which applications are gate valves commonly used?

According to the information, in which of the following applications are gate valves commonly employed?

6. How is manual operation achieved in gate valves?

According to the information, how is manual operation accomplished in gate valves?

7. What is typically required for automating gate valves?

According to the information, what type of actuator is typically required to automate gate valves?

Short Article on Gate Valves

Gate Valves

Gate valves are a type of isolation valve that uses a sliding disc (gate) to control the flow of fluid. They are characterized by their high capacity, tight shutoff, and low cost. Gate valves are ideal for applications where infrequent operation is required, such as on/off control of a pipeline. They are also well-suited for high pressure drop and high temperature applications.

Recommended uses:

  • Fully open/closed, non-throttling applications
  • Infrequent operation
  • Applications where minimal fluid trapping in the line is desired


  • High capacity
  • Tight shutoff
  • Low cost
  • Little resistance to flow


  • Poor control
  • Can cavitate at low pressure drops
  • Cannot be used for throttling


  • Oil
  • Gas
  • Air
  • Slurries
  • Heavy liquids
  • Steam
  • Noncondensing gases
  • Corrosive liquids

Manual operation is accomplished through a multi-turn hand wheel gear shaft assembly. Multiturn electric actuators are typically required to automate gate valves, however long stroke pneumatic and electro-hydraulic actuators are also available.

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