【Discussion Thread 33】What are all the differences between pressure testing and airtightness testing?
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This post was last edited by kareale88 on 2019-4-4 12:01 with bg4.png【Discussion Thread 33】What are all the differences between pressure testing and airtightness testing? 1. Definition 2. Principle 3. Function 4. Procedure operations 5. Which test to choose in what situations 6. Precautions 7. Other matters Can the airtightness test be omitted after an air pressure test? If so, under what circumstances can it be omitted?
One is a pressure test； One is the density test!
The pressures for the two are different: the pneumatic pressure test requires 1.1P, while the airtightness test requires 1.0P; the purposes of these tests also differ； A pressure test is used to check strength, while a airtightness test is used to check tightness ；
Air pressure is a strength test, while airtightness is a leakage test.
It has been learned that the pump features 1.25 times greater sealing performance and 1.5 times greater strength
Pneumatic testing is relatively dangerous and requires higher standards for non-destructive testing. Hydraulic testing is usually given priority; pneumatic testing is recommended only when the presence of a liquid medium is not allowed within the equipment, or when the load-bearing capacity of the equipment is limited. The standard states that a pressure test can replace a leak test; unless otherwise specified in the design, if a pressure test has been conducted, a leak test is generally not required.
Pressure testing is a type of stress test designed to assess the impact on the safety of pressure vessels caused by defects in the material itself, as well as various defects that arise during manufacturing – particularly during welding – and during use. A gas-tightness test is a type of leakage test designed to evaluate the sealing performance of a container.
Yes, the testing requirements vary across different industries.
The leak test must be carried out after the pressure test is successful!
This post was last edited by zjq1962 on 2019-4-4 at 16:23. 1. The purposes of the tests are different: one is to test strength, and the other is to test density. 2. The test pressures are different. 3. The test procedures are different. 4. The criteria for determining compliance are different. 5. The safety requirements vary during testing. 6. The timing of the tests is different. 7. During the airtightness test, safety accessories should generally be fully installed; an air pressure test is not required.
One is a strength test, and the other is a sealing test