WBPSC AE 2001
⭕ A. Air relief valve
⭕ B. Sluice valve
⭕ C. Check valve
⭕ D. Globe valve
📚 Explanation:
The valve most commonly provided to regulate or throttle flow in a pipeline is the Globe valve.
🔹 Globe valves are designed for accurate flow regulation and can be used for throttling.
🔹 They are normally metal- or hard-seated but can be fitted with resilient disc inserts or seats suitable for compressed air or fluids with small particles.
🔹 Other valves: Air relief relieves trapped air; Sluice (gate) valves are mainly for on/off service; Check valves prevent backflow.
The valve most commonly provided to regulate or throttle flow in a pipeline is the Globe valve.
🔹 Globe valves are designed for accurate flow regulation and can be used for throttling.
🔹 They are normally metal- or hard-seated but can be fitted with resilient disc inserts or seats suitable for compressed air or fluids with small particles.
🔹 Other valves: Air relief relieves trapped air; Sluice (gate) valves are mainly for on/off service; Check valves prevent backflow.
👉 Therefore, the correct answer is: D. Globe valve
Key Points on Valve Types:
- Globe valve: Best for regulating/throttling flow; precise control.
- Air relief valve: Releases trapped air from the pipeline.
- Sluice (gate) valve: Used for on/off service, not ideal for throttling.
- Check valve: Allows flow in one direction; prevents backflow.
