When the control pressure exceeds a certain level due to a transitory occurrence, the relief valves AV-LP and AV-MP release a specific volume of gas. Gasses may be released through AV-LP and AV-MP release valves as a result of occurrences such as a temporary valve shutdown and/or overheating with no flow needs. It is not required to overheat the gases. The valves are simple in design and may be placed almost anyplace. The AV-LP/MP relief valves provide users with safe operation, simplified maintenance, and increased reaction precision.