the purpose and maintenance methods of the breathing valve

The breathing valve is composed of a pressure valve and a vacuum valve. It is installed on the ventilation pipe of the cargo oil tank and can automatically open and close according to the positive and negative pressure changes of the oil and gas in the cargo oil tank, keeping the pressure difference inside and outside the cargo oil tank within the allowable range.

Breathing valve is a safe and energy-saving product that maintains the pressure balance of storage tanks and reduces medium volatilization. Breathing valve fully utilizes the pressure bearing capacity of the storage tank itself to reduce medium emissions. Its principle is to use the weight of positive and negative pressure valve discs to control the exhaust positive pressure and suction negative pressure of the storage tank.

The maintenance and upkeep of the breathing valve should be done once a month, and twice a month in winter. The method is as follows: first, gently open the valve cover, remove the vacuum valve disc and pressure valve disc, check the sealing between the valve disc and the valve disc, as well as the valve disc guide rod and guide rod sleeve for oil and dirt; If oil stains and dirt appear, they should be cleaned up and then reinstalled in their original positions. Pull up and down a few times to check if the opening is flexible and reliable. If everything is normal, then tighten the valve cover tightly. During maintenance and upkeep, if any abnormal phenomena such as scratches or wear are found on the valve disc, it should be replaced immediately or the supplier company should be contacted to solve the problem in a timely manner.

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