FIELD: gas industry.
SUBSTANCE: system includes a gas exhaust line; a valve coupling gas exhaust line and a pipe; and a control unit generating a command to open and close valve, control unit opening valve to vent gas from pipe and closing valve within a period of time.
EFFECT: method includes receiving a command at a valve to open in order to exhaust gas from a pipe of a sprinkler system through a line coupled to valve, command corresponding to a command to turn on a pump unit of sprinkler system, determining that liquid provided at an output of pump unit is present in pipe, and receiving a command at valve to close in order to prohibit flow of liquid through line.
20 cl, 2 dwg
