Vent valve opening pressure error
Thread Content
At present, the only standard for breather valves in the petrochemical industry is SY0511.1-2010. This standard specifies that the allowable deviation for the opening pressure of breather valves is: positive pressure –20Pa to 0Pa； Negative pressure: 0Pa~20Pa. However, practical tests have shown that it is difficult to meet this error requirement. I’d like to ask the experts here: how do you proceed?
Does the breathing valve still need to be calibrated?
The opening pressure error of the breather valve refers to the deviation between the opening pressure of the breather valve in actual testing and the standard requirements. It can be difficult to meet this requirement sometimes due to limitations in the testing conditions or issues with the equipment itself. To solve this problem, the following actions can be considered: 1. Select appropriate testing equipment: Ensure that the accuracy and stability of the testing equipment meet the requirements, and use a high-precision pressure gauge for testing. 2. Provide a stable testing environment: During testing, minimize external disturbances and ensure that parameters such as temperature, humidity, and air pressure in the testing environment remain stable. 3. Adjust the testing methods: Depending on the actual circumstances, different testing methods can be tried, such as changing the position of the testing equipment or the testing time, in order to improve the accuracy of the test results. 4. Optimize the design of the breather valve: If the opening pressure often deviates from the specified range, it may be advisable to optimize the design of the breather valve in order to improve its performance in terms of opening. In summary, in practical applications, it is necessary to take into account factors such as testing equipment, testing environment, and vent valve design, and to keep trying and optimizing in order to meet the requirements regarding the error in the opening pressure of the vent valve. .
The selection of the vent valve diameter is very important. Some storage tanks become deformed due to an inappropriate choice of vent valve diameter.