How many gauges are typically found on a refrigerant gauge and testing manifold?

A refrigerant gauge and testing manifold typically features two gauges, which are essential for monitoring both the high-side and low-side pressure of the refrigeration system. The high-side gauge measures pressure within the compressor and condenser, while the low-side gauge monitors pressure in the evaporator. This dual-gauge setup allows technicians to assess the system's performance and diagnose issues efficiently.

In addition to the two gauges, a manifold usually has two valves that control the flow of refrigerant to and from the system, as well as three ports. The ports are typically designated for service connections: one for the low-pressure gauge, one for the high-pressure gauge, and a third port, often called the center port, which is used for adding or reclaiming refrigerant. This setup facilitates comprehensive testing and servicing of refrigeration systems by allowing technicians to connect hoses and adapt their testing methods as necessary.