Class 2 (2nd Engineer) MEKG 📅 Mar 2023

Exam Question

Sketch and describe a valve suitable for reducing air pressure maintaining the reduced pressure within close limits. Describe the processes through which from the starting air receivers should be treated before it is used in a pneumatic control system. (16)

Reference Answer

### Part A: Pressure Reducing Valve
A pressure reducing valve is an automatic control valve designed to reduce a high, often fluctuating, inlet pressure to a lower, stable outlet pressure, irrespective of changes in upstream pressure or downstream flow demand. It is a crucial component in pneumatic systems for supplying air at a precise, usable pressure.
#### Construction
A direct-acting, spring-loaded diaphragm type pressure reducing valve consists of the following key components:

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