Low and Overpressure Test

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What is the goal of a low and overpressure test?

Products are often used at different heights and in different environments, which can lead to different pressure conditions. The purpose of low and overpressure testing is to test and ensure the integrity and reliability of products, materials or systems under extreme pressure loads.

Low pressure tests aim to ensure that a product functions properly in situations with low atmospheric pressure as well. Whereas overpressure tests simulate conditions where the product is exposed to extreme pressure.

Through the targeted application of low and overpressure, potential weak points in the design or the material used are identified and rectified to ensure the highest safety standards. In addition, the tests help ensure compliance with industry standards and legal regulations.




What happens during a Positive or Negative pressure test?

During a low pressure test, the test specimen is placed in a pressure chamber. A reduced pressure is generated that is below the usual ambient pressure. Potential leaks or weak points in the specimen are identified by the intrusion of air or gas. This examines the tightness and integrity of the test specimen in environments where negative pressure is present or required.

In an overpressure test, on the other hand, the specimen is pressurized above the usual ambient pressure. This tests the load capacity and resistance of the specimen to high pressure levels. During the test, it is checked whether the specimen can withstand the required pressure without deforming, failing or developing leaks.

The test specimen must meet standards in terms of compressive strength.

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In which areas are low and overpressure tests used?

They are essential procedures in various industries:

Overpressure tests are used in various areas:

  • Fluid power: pressure vessels, pipelines and valves
  • Aerospace: pressurized cabins, fuel tanks
  • Automotives: cooling systems, fuel lines and brake systems
  • Medical technology: hydraulic systems, ventilators

Vacuum tests are also used in many industries:

  • Aerospace: space probe components
  • Vacuum technology: vacuum pumps or seals
  • Building technology: air conditioning systems, ventilation systems

Standards: DIN EN 60068-2-13, ASTM 4169, ASTM D 6653, ASTM 7386, ASTM F 2096, ASTM F1140, ASTM D4991, RTCA DO-160, MIL-STD-810, AECTP 300

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