《Valve Strength Test Pressure Value Holding Time and Qualification Criteria Judgment》
As an important component of the industrial pipeline system, the holding time of the test pressure value and the judgment criteria for qualification of the strength test of the valve are important links to ensure its safety performance. This article will start from the basic concept of the valve strength test and explore in depth the basis and methods for the holding time of the test pressure value and the judgment criteria for qualification.
One, the holding time of the test pressure value of the valve strength test
The test pressure value of the valve strength test refers to the pressure value that the valve can withstand during the test process. The holding time of the test pressure value varies depending on the test method. During the valve strength test, the holding time of the test pressure value is usually not less than 5 minutes. This is because the length of the holding time of the test pressure value directly relates to whether there is any leakage inside the valve. If there is no leakage during the holding time, it indicates that the strength performance of the valve meets the requirements. During the strength test, if there is leakage after the holding time, the test needs to be re-performed until there is no leakage after the holding time of the test pressure value, and then it can be determined that the strength performance of the valve is qualified.
Two, the judgment criteria for the qualification of the valve strength test
The main basis for the judgment criteria for the qualification of the valve strength test is the holding time of the test pressure value and whether there is any leakage during the test process. Specifically, the judgment criteria for the qualification of the valve strength test mainly include the following two aspects:
The holding time of the test pressure value
During the valve strength test, the holding time of the test pressure value should not be less than 5 minutes. If there is no leakage during the holding time, it can be determined that the strength performance of the valve meets the requirements. If there is leakage during the holding time, the test needs to be re-performed until there is no leakage after the holding time of the test pressure value, and then it can be determined that the strength performance of the valve is qualified.
Whether there is any leakage during the test process
During the valve strength test, it is necessary to observe whether there is any leakage phenomenon during the test process. If there is no leakage during the test process, it can be determined that the strength performance of the valve meets the requirements. If there is a leakage phenomenon during the test process, the test needs to be re-performed until there is no leakage during the test process, and then it can be determined that the strength performance of the valve is qualified.
Three, Conclusion
The holding time of the test pressure value of the valve strength test and the judgment criteria for qualification are important links to ensure the safety performance of the valve. The holding time of the test pressure value should not be less than 5 minutes, and there should be no leakage during the test process. In this case, it can be determined that the strength performance of the valve meets the requirements. Therefore, in order to ensure the safety performance of the valve, it is necessary to strictly follow the basis and methods for the holding time of the test pressure value and the judgment criteria for qualification to ensure that the strength test of the valve meets the requirements.