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Technical Interview Questions 17 

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161. Is gate valve used for Throttling?

Gate valves are not suitable for throttling because the control of flow is difficult for the valve’s design, and the flow of fluid slapping against a partially open gate can cause extensive damage to the valve.

162. Why is the Suction pipe of Vapour Compression Refrigeration system insulated?

1. It prevents the suction line from sweating and dripping water inside the house.

2. The insulation also prevents the suction line attracting heat from the outdoors on its way to the condenser coil.



 

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