What's proportional control valve? Please list the symbol for this type valves, and explain the reasons for that "not only control the flow direction of fluid, but also change the amount of flow"? Please figure out the attributes of proportional control valve.

What's proportional control valve? Please list the symbol for this type valves, and explain the reasons for that "not only control the flow direction of fluid, but also change the amount of flow"? Please figure out the attributes of proportional control valve.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter9: Refrigerant And Oil Chemistry And Management-recovery, Recycling,

Section: Chapter Questions

Problem 28RQ: Briefly describe the types of piercing valves used in the industry, and list some advantages and...

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Concept explainers

Pressure Vessels

The term pressure vessel refers to a closed container that contains gas or liquid at a different pressure than environment pressure. The pressure vessels have a wide scale of applications in our day-to-day lives and other industrial places. Some common examples of pressure vessels are gas cylinders, autoclaves, compressor vessels, etc.

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