Synonyms for Relief valve:

• n.

  •escape (noun)
  • escape.
  •escape valve (noun)
  • escape valve.
  •safety valve (noun)
  • relief valve,
  • means of escape,
  • outlet.

• Other synonyms:

  •n.
  • regulator,
  • safety valve,
  • valve.
  •Other relevant words:
  • escape cock.