The breathing valve fully uses the pressure of the oil tank itself to reduce the oil vapor discharge. The principle is to use the weight of the valve disk to control the exhalation positive pressure and inhale negative pressure of the oil tank.
The role of breathing valve
The respiratory valve has the functions of drain positive pressure and negative pressure.The specific manifestation is that when the container is affected to a certain positive pressure, the breathing valve will open the exhaled gas to discharge positive pressure; when the container is affected by negative pressure, the fire blocking respiratory valve will open the inhaled gas release negative pressure, so as to ensure the pressure to ensure the pressureIn a certain range, to ensure the safety of the container.
Breathing valve working principle
1. When the pressure of the medium in the tank is within the control operation pressure range of the respiratory valve, the respiratory valve is not working to keep the tanks closed.2. When the medium supplement medium in the can, the pressure of the upper gas space in the tank is increased to reach the positive pressure of the respiratory valve, the pressure valve is pushed open, and the gas is exhaled from the breathing valve.Grow up.3. The atmosphere outside the tank will open the negative pressure valve disk of the breathing valve.Breathing valve: consisting of pressure valve and vacuum valve, which is installed on the cargo oil compartment breathable pipe. It can automatically open and close with the changes in the positive and negative pressure of the oil and gas in the oil compartment, so that the inner and outer pressure difference between the cargo oil compartment is kept in the allowable value rangevalve.
Breathing valve selection
1. First, determine the breathing valves breathing volume according to the conditions of the specific occasion of the respiratory valve and the specified calculation method or formula.2. Contrast the performance curve of different fixed pressure values ??provided by the respiratory valve manufacturer, and choose the size of the respiratory valve.It also determines the starting pressure and ventilation pressure of the respiratory valve.When a single breathing cannot meet the requirements, more than two breathing valves can be set.3. Confirm the minimum pressure of the container design and the maximum pressure of the container permit, that is, the determination of negative pressure and positive pressure. The operating pressure range: positive pressure, negative pressure, and respiratory valve products meet the SY/T0511-1996 standard requirements, divided into dividedThe two major series of ordinary and all -weather types and three types of fire resistance respiratory valve and hydraulic safety valve.
Breathing valve manufacturer
Shanghai Tianlai Petrochemical Equipment Co., Ltd. is an excellent respiratory valve manufacturer in China.The products launched are not only various pump valve and other products, but also launched products about Petrochemical equipment and related products.Since its establishment, Shanghai Tianlai Petrochemical Equipment Co., Ltd. has gathered in research and development, production, sales, and after -sales service.It has successfully created a comprehensive and strong respiratory valve manufacturer. After continuous efforts and innovation, it has become a leader in domestic petrochemical equipment and related product manufacturing technology.The plant built by Shanghai Tianlai Petrochemical Equipment Co., Ltd. covers an area of ??about 26,000 square meters, and has various high -end high -quality processing equipment and testing equipment at home and abroad.There are more than two hundred technical employees, each of which is rich in commodity production technology and experience for many years.Today, there are fifteen product series. The main products include fireproofrs, respiratory valves, pipe filters, precision filters, vision mirrors, etc.Various types of products launched by Shanghai Tianlai Petrochemical Equipment Co., Ltd. are now widely used in various industries.In addition, in Europe, the United States, the Middle East and other countries, it is also well received by foreign consumers and business users.

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