HVAC 201

What is the name of the tool used to open and close the service valve?

• Service port wrench

• Valve opening tool

• Adjustable service key

• Ratcheting service wrench

What is the purpose of the service port in the valve?

• To regulate the flow of refrigerant

• To isolate and seal off one side of the system

• To release excess pressure from the system

• To connect the valve to the compressor

What can happen if the service port is unscrewed all the way out?

• The refrigerant charge is lost

• The valve becomes permanently closed

• The valve becomes damaged

• The system pressure increases

What is the purpose of the keeper ring on the service port?

• To secure the service port in place

• To stop the service port from unscrewing completely

• To prevent the valve from opening too wide

• To indicate the maximum pressure allowed in the system

What can happen if the service valve is overheated during brazing?

• The o-ring inside the valve melts

• The system pressure increases

• The refrigerant charge is lost

• The valve becomes permanently closed

What type of valve is commonly used in refrigeration and has a ball valve design?

• Service port valve

• Ball valve

• Mid seat valve

• Back seat valve

Where is the king valve located in a refrigeration system?

• On the compressor

• On the liquid receiver

• On the service port

• On the condenser

What is the main difference between a king valve and other service valves?

• The shape of the valve

• The material used in the valve

• The location of the valve

• The size of the valve

What is the purpose of the pin in the one-time use valve?

• To regulate the flow of refrigerant

• To break the seal and allow refrigerant flow

• To indicate the maximum pressure allowed in the system

• To prevent the valve from opening too wide

What happens once the one-time use valve is opened?

• It can be closed again for future use

• It separates the two sides of the system

• It permanently seals off the refrigerant flow

• It allows refrigerant flow but cannot be closed again