Which valve is used to add refrigerant to a centrifugal chiller?

Prepare for the Type III Low Pressure Equipment Certification. Master essential concepts with practice questions and detailed explanations. Ensure success on your exam day!

The evaporator charging valve is essential when it comes to adding refrigerant to a centrifugal chiller. This valve allows technicians to introduce refrigerant into the system efficiently, ensuring that the chiller has the proper charge needed for optimal operation. When refrigerant levels are low, the charging valve provides a direct connection to the refrigerant supply, enabling safe and effective replenishment.

The other valves mentioned serve different functions that do not pertain directly to adding refrigerant. The pressure relief valve is critical for safety, preventing overpressure in the system by releasing excess refrigerant or gas. The discharge valve is responsible for regulating the flow of refrigerant once it has been compressed, while the liquid line valve is typically involved in controlling the refrigerant flow from the condenser to the evaporator but does not facilitate charging.

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