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Why are shut-off valves placed within 12 inches from the "vehicle end" of A/C service equipment hoses?

To allow better manipulation of the hoses

To minimize venting of refrigerant

The placement of shut-off valves within 12 inches from the "vehicle end" of A/C service equipment hoses is primarily to minimize venting of refrigerant. By positioning the valves close to the service equipment, technicians can effectively control the flow of refrigerant when connecting or disconnecting hoses. This limits the amount of refrigerant that escapes into the atmosphere, thereby adhering to regulatory standards and environmental practices aimed at reducing refrigerant emissions, which is crucial for minimizing harm to the ozone layer and supporting sustainability efforts.

This strategy also lessens the chance of refrigerant loss during service operations, making the process not only more efficient but also safer for technicians who might be exposed to refrigerants. Reducing venting is essential for both environmental protection and compliance with industry regulations related to refrigerant handling.

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To ensure easy accessibility for repairs

To prevent system contamination

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