Two-way breathing valve function

                    Breathing valve (two-way breathing valve) is to maintain tank pressure balance, reduce the medium volatile safe energy-saving products, breathing valve to make full use of the tank itself pressure capacity to reduce the medium emissions, its principle is to use the weight of positive and negative pressure valve disc to control the tank exhaust positive pressure and suction negative pressure.When the pressure of the medium in the tank is within the operating pressure range controlled by the breathing valve, the breathing valve does not work and keeps the tightness of the tank.When the medium is added to the tank to increase the pressure of the upper gas space in the tank to reach the operating positive pressure of the two-way breathing valve, the pressure valve is pushed open, and the gas escapes from the breathing valve's outlet, so that the pressure in the tank is no longer increased;Beyond can take out medium, make the tank top gas pressure drop of the space, achieve the respiration valve operating pressure, open the atmosphere outside the tank will be breathing valve open the suction valve plate, the gas into the tank, the tank pressure is no longer continue to fall, let the tank and tank pressure balance, to protect the safety of the tank.