ESKA EGV series, manually adjusted gas valves, are used for  safety purposes in the gas lines to automatically stop the gas flow by the effect of the signals given by the third party equipment such as gas alarm detectors, ventilation devices etc. The gas valves are equipped to shut off the gas line as soon as the third party device sends a signal to the valve. This device aims at preventing hazardous situations due to gas leakage such as risk of fire.