Exam Question
Write short notes to explain the following fittings/devices used in engine room, and their applications: (16)
(a) Gate valve
(b) Butterfly valve
(c) Quick Closing valve
(d) Valve actuators
Class 4 (4th Engineer)
MEKG
📅 Jun 2025
Reference Answer
This detailed explanation covers the construction, operation, and application of various engine room fittings/devices, conforming to Surveyor-Grade standards.
### (a) Gate Valve
* **Concept:** A gate valve is a multi-turn, linear motion valve designed primarily for on/off service, meaning it is intended to be operated either fully open or fully closed. It functions by lifting a gate (or wedge) out of the path of the fluid. When fully open, it offers minimal resistance to flow, resulting in a very low-pressure drop across the valve.
* **Construction:**
### (a) Gate Valve
* **Concept:** A gate valve is a multi-turn, linear motion valve designed primarily for on/off service, meaning it is intended to be operated either fully open or fully closed. It functions by lifting a gate (or wedge) out of the path of the fluid. When fully open, it offers minimal resistance to flow, resulting in a very low-pressure drop across the valve.
* **Construction:**
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