What type of connection is used to install R-12?

R-12 refrigerant is typically installed using a standard refrigerant service connection, which consists of a high-pressure and low-pressure service port. These connections are designed to accommodate specific refrigerant gauges and hoses for safe charging and recovery. R-12 systems often utilize flare fittings, which provide a secure and leak-free connection. However, due to environmental regulations, the use of R-12 has been largely phased out in favor of more environmentally friendly alternatives.