Meanings of pressure relief valve in English

Prosecutors said the company's air permit application did not mention a pressure relief valve emitting noxious coke oven gas.

Use the pressure relief valve if the keg's got one; otherwise, press down with a screwdriver on the gas-in line.

Prosecutors say Tonawanda released benzene into the air through a pressure relief valve but did not report the emissions to regulators.

At trial, prosecutors said Tonawanda Coke released benzene into the air through a pressure relief valve, but did not report the emissions to regulators.