Principles for equipping containers with dual safety valves
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When should a double safety valve be installed on a container? What is the function of the two safety valves? Isn’t the set pressure the same everywhere? Are there any relevant regulatory requirements?
For containers that operate under high temperatures and pressures and where pressure control is difficult, dual safety valves are used to provide additional safety; their pressure relief performance is reliable, and the set pressures should be identical. It is possible to refer to the relevant standards for pressure vessels.
Installing dual safety valves is just wasting money.
Boiler drum, equipment that has been in operation for over a year
The one-operational and one-backup safety valve system is designed to enable the other safety valve to take over when one of them needs to be serviced, thereby ensuring the continuous operation of the device. If it are two safety valves that discharge gradually, there is usually a large amount of fluid released, and the set pressures of the two safety valves are generally different as well. It’s better to analyze each case on its own.