Which type of valve is used in pipelines for convenience in manually closing the pipes to control the flow of water and has an advantage of quicker opening?

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BHEL Engineer Trainee Civil 24 Aug 2023 Official Paper
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  1. Globe valve
  2. Gate valve
  3. Butterfly valves
  4. Check valves

Answer (Detailed Solution Below)

Option 3 : Butterfly valves
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Detailed Solution

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Explanation:

Valve Types for Pipeline Flow Control

In pipelines, different types of valves are used to control the flow of water. Each valve type has its own advantages and applications, especially when it comes to manual operation and quick opening/closing. Below is an analysis of the given options to determine the most suitable valve for the specified criteria:

  1. Globe Valve

    • Globe valves are generally used for throttling applications, where precise control of flow is required. They are not typically known for quick opening and closing.

    • They have a complex structure that makes them less convenient for manual operation when quick action is needed.

  2. Gate Valve

    • Gate valves are designed for on/off control, providing a straight-line flow of fluid with minimal restriction. They are suitable for full open or full close applications.

    • While they can be manually operated, their opening and closing process is slower due to the need to raise or lower the gate.

  3. Butterfly Valve

    • Butterfly valves are characterized by their quick operation, as they rotate a quarter turn (90 degrees) to open or close. This makes them highly suitable for applications where quick opening and closing are required.

    • They are also more convenient for manual operation compared to other types due to their simple and compact design.

  4. Check Valve

    • Check valves are primarily used to prevent backflow in pipelines. They operate automatically, not manually, and are not suitable for controlling flow in the same manner as globe, gate, or butterfly valves.

Conclusion

Based on the analysis, the most suitable valve for convenience in manually closing the pipes to control the flow of water and having the advantage of quicker opening is: Butterfly Valve.

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