The emergency valve, BAP (VAP)-HVE, consists of the BAP (VAP) valve and the control panel. The control panel consists of the plastic switchboard, two push-buttons (off button T1 and start button T2) and installation contactor S1. It is used where the remote opening of the valve is not suitable, but rather opening from the spot. In case of gas leakage the sensor of gas leakage (it is not the part of HVE) will disconnect the current supply to the emergency valve, which will shut off flow through the piping. After the electric current supply is restored the emergency valve will not automatically open the flow. The valve can be opened only with the help of the green push button located in the control box which must be fastened on a wall with screws and wall plugs at the distance of 1 m from the valve. From the same place it is possible to close the valve using the red push button. Valve-open is signaled by the green control light.