Valve assembly

A valve assembly comprising:

• a body;
• and
• a plurality of valve subassemblies configured to be attached to the body, wherein
• the plurality of valve subassemblies includes:
• a safety valve having an inlet and configured to release a gas flowing into the inlet to an outside when a temperature of the safety valve exceeds a threshold temperature;
• and
• another valve configured to control a flow of the gas in a manner different from a manner of the safety valve,
• the body includes:
• a gas flow passage including a first flow passage connected to a gas tank and a second flow passage connected to an external device;
• and
• an integrated attachment hole that communicates with each of the first flow passage and the second flow passage,
• the integrated attachment hole includes:
• a first attachment hole that is open in an outer surface of the body and is configured such that the safety valve is attached;
• and
• a second attachment hole that is open in a bottom surface of the first attachment hole and is configured such that the other valve is attached,
• the inlet is configured to communicate with the first flow passage regardless of an open or closed state of the other valve, and
• the other valve is a check valve configured to restrict the flow of the gas from the first flow passage to the second flow passage and allow the flow of the gas from the second flow passage to the first flow passage.