safety valve

The control room sent a message to the emergency response center requesting more batteries so they could open the safety valves and vent the extra steam.

ObamaCare could soon became a safety valve for underwater cities.

Banks have more regularly tapped a Fed lending facility designed as a safety valve that lets them exchange securities for reserves, offering another sign of reserves becoming less ample.

In that incident, the board’s investigation found multiple safety failures, including a severely eroded safety valve that allowed flammable gases to dangerously seep into unwanted areas.

A safety valve had been removed from the pipes for maintenance.