noun
safety valve
A mechanical device that automatically releases pressure from a system to prevent accidents. Also used figuratively for an outlet that relieves stress or tension.
ボイラーにはセーフティーバルブが付いている。
The boiler is equipped with a safety valve.
彼にとってジョギングはストレスのセーフティーバルブだ。
For him, jogging is a safety valve for stress.
The native Japanese equivalent of 'safety valve', used in technical contexts. セーフティーバルブ is the loanword and may sound slightly more modern or casual.
Variant with a middle dot; less common but still seen.
Loanword from English 'safety valve'.