Which of the valves listed is normally...

Question 1 / 270705eccef9dbacbc34ba4d460e5

Question 1 of 270705eccef9dbacbc34ba4d460e5

Which of the valves listed is normally closed when charging the refrigeration system through the high side?

Question 1 of 27070

Which of the valves listed is normally closed when charging the refrigeration system through the high side?

🔍 Key Concepts

• High-side vs low-side charging in a refrigeration system • Normal flow path of refrigerant through king valve, dehydrator, and TXV • Which valves must remain open to allow proper refrigerant flow and dehydration when charging

💭 Think About

• Trace the normal direction of refrigerant flow from the receiver toward the evaporator and ask: which components must refrigerant pass through during charging? • Consider which valve, if left open, would prevent proper control of refrigerant into the evaporator and could risk liquid floodback to the compressor. • Think about which component is a metering device and whether you would normally shut it by a hand valve during charging.

✅ Before You Answer

• Identify which valve directly controls flow into the evaporator (metering device). • Confirm which valve isolates the receiver/liquid line from the rest of the system when closed. • Verify which component (dehydrator vs TXV vs king valve vs suction valve) you would NOT normally throttle or shut solely for charging on the high side.

Question 1 of 27070

Which of the valves listed is normally closed when charging the refrigeration system through the high side?

Liquid line king valve

Suction line valve

Thermal expansion valve

Dehydrator inlet valve