In a system with a 150 lb refrigerant charge, where would stop valves typically be found?

In a refrigeration system, stop valves are crucial for isolating components during maintenance or repair. When considering the typical placement of stop valves in relation to a condenser receiver, the inlet line of the condenser receiver is an important point for these valves.

The main function of a stop valve in this context is to allow for the complete isolation of the condenser from the system, especially when servicing. Placing the stop valve on the inlet line to the condenser receiver facilitates efficient access for maintenance without requiring a full evacuation of the refrigerant charge, which in this case is substantial at 150 lbs.

This placement ensures that if work is needed on the condenser receiver, the technician can quickly and safely isolate that section of the system while keeping the rest operational if desired.

In contrast, while other options also reference lines connected to key components of the refrigeration cycle, they do not provide the same level of accessibility and safety for maintenance of the condenser receiver specifically.