the respiration valve working principle of the breather Industrial Valves is to use spring limit valve plate, or determined by the positive and negative pressure or breath. And gravity type breather valve, and relies on gravity to adjust, when the air pressure inside the container reaches more than the weight when the open pressure relief valve. Description: when the pressure in the tank is balanced with the atmospheric pressure, the respiration valve exhalation valve disc closely cooperate with the exhalation outlet valve seat, the suction disc is closely cooperate with the inlet valve seat. When the pressure in the tank is more than the atmospheric pressure value ( Too much positive pressure) When the tank pressure below the direct effects on breathing Industrial Valves, and to overcome the disc gravity as well as the external pressure acting on the disc, thus open air Industrial Valves by A channel of the high pressure discharge tank, the tank pressure and atmospheric pressure balance. When the pressure in the tank is lower than atmospheric pressure value ( That had a low negative pressure) , the atmosphere through the suction channel B to enter and direct effects on below the suction disc, and to overcome the disc and gravity ACTS on the disc at the top of the tank pressure, so as to open the suction valve to add pressure in the tank, the tank pressure and atmospheric pressure balance. When the fire breaks out, fire source may spread to the storage tank through the inlet, when the flame passes the respiration valve small pore of the flame-resistant core in, due to the wall effect, the corrugating plate absorbs a great deal of heat, the heat loss at once, so that the flame is extinguished. Respiration valve installation 1 valve should be installed at the highest point of the air storage tank, in order to reduce the evaporation loss of material and in order to successfully provide the channel to breathing valve is the most direct and most. Usually for a vertical tank, the valve should be installed as far as possible within the scope of the roof the roof, the roof of the need for thermal insulation layer of storage tank, and can be installed in the ladder near the platform. 2 when need to install two respiration valves, they are with the roof center should be symmetrical layout. If breathing valve to use on the nitrogen can sealing, the nitrogen gas supply pipe to take over the position of interface should be far away from the valve, and insert the storage tank from the top is about 200 mm, that is not directly discharge after nitrogen into the pot, achieve the goal of nitrogen sealed.

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