Exam Question
Write short notes to explain the following fittings devices used in engine room and their applications
(a) Gate valves (4)
(b) Butterfy valves (4)
(c) Quick Closing valves (4)
(d) Valve actuators (4)
Class 4 (4th Engineer)
MEKG
📅 May 2023
Reference Answer
### (a) Gate Valves (4 Marks)
**1. Principle of Operation:**
A gate valve is a linear motion, multi-turn isolation valve. Its primary function is to start or stop flow (on/off control) and is not intended for throttling or regulating flow. The closure member is a flat or wedge-shaped gate that moves perpendicularly into the flow stream. When fully open, it offers minimal flow resistance.
**2. Construction:**
**1. Principle of Operation:**
A gate valve is a linear motion, multi-turn isolation valve. Its primary function is to start or stop flow (on/off control) and is not intended for throttling or regulating flow. The closure member is a flat or wedge-shaped gate that moves perpendicularly into the flow stream. When fully open, it offers minimal flow resistance.
**2. Construction:**
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