All refrigeration systems must be protected by a which relief valve and must not be installed in series?

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Multiple Choice

All refrigeration systems must be protected by a which relief valve and must not be installed in series?

All refrigeration systems need a device that will release refrigerant if pressure gets too high. A pressure relief valve is designed exactly for this purpose: it stays closed during normal operation and opens automatically when the system pressure reaches a dangerous level, venting to prevent equipment damage or failure. Other types of relief devices protect against different conditions—vacuum, excessive temperature, or backflow—but they don’t provide the reliable overpressure protection needed for typical refrigeration equipment. Installing two relief valves in series can create unpredictable relief behavior: the upstream valve could keep the downstream one from opening at the correct pressure, or venting could occur in an uncontrolled way. That’s why only a pressure relief valve is specified for this protection, and it should not be placed in series with another relief valve.

All refrigeration systems need a device that will release refrigerant if pressure gets too high. A pressure relief valve is designed exactly for this purpose: it stays closed during normal operation and opens automatically when the system pressure reaches a dangerous level, venting to prevent equipment damage or failure.

Other types of relief devices protect against different conditions—vacuum, excessive temperature, or backflow—but they don’t provide the reliable overpressure protection needed for typical refrigeration equipment. Installing two relief valves in series can create unpredictable relief behavior: the upstream valve could keep the downstream one from opening at the correct pressure, or venting could occur in an uncontrolled way. That’s why only a pressure relief valve is specified for this protection, and it should not be placed in series with another relief valve.

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