Question

When is the only time that both hand valves of a manifold gauge set should be open at the same time?

Answer 1

The only time that both hand valves of a manifold gauge set should be open at the same time is during system charging.

To diagnose and repair cooling or refrigeration systems, manifold gauge sets—also called HVAC gauges or refrigeration gauges—are frequently employed. They measure low- and high-refrigerant pressure using mechanical or digital gauges to identify issues like leaks or to help with system evacuation and recharge.

In manufacturing and engineering, a gauge, usually spelled gauge, is a tool used to assess if one dimension is larger or smaller than another that is used as a reference standard.

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