Leak Testing Systems


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Alliance Concept of France manufacture full leak testing systems for testing a range of parts from very small to very large. If you have a bespoke requirement please get in touch and we will be pleased to help.

For more information about Alliance Concept you can visit their website at http://www.alliance-concept.com/?lang=en.

You've probably already heard about tightness, for instance water-tightness or else seal tightness. Thousands of products manufactured for and by any industry have this common feature : tightness to a fluid, e.g. gas or water. An injection pump couldn't serve its purpose if not tight to fuel, an oxygen tank wouldn't be safe if not gas-proof. What about a leaking air-con hose?

Now, what about "leak testing" or "tightness validation"? How is the "leak rate" quantified? Which products can be tested? What type of equipment do I need? These are most certainly some of the questions you are asking yourself if you're here.

Alliance Concept leak testing is perfect for challenging industries such as Automotive, Energy, Refrigeration, Electronics, Aviation , Connectors, Medical and others.

Parts suitable for testing include injection pumps, injectors, fuel tanks, aircraft brake pistons, compressors, connectors, gas meters, electrical equipment such as switch gears, battery packs, ultracapacitors, HP valves.

Leak Test Components

A reliable leak testing system consists of :

Global Leak Test

The global test is the method that provides the highest sensitivity up to 10-10 atm.cm3/s. The working principle is as follows :

Global Leak Testing

Helium Sniffing Leak Test

The sniffing method helps to localise the leak(s) location. Here is how it works :

Helium Sniffing Leak Testing

Pressure Decay Leak Test

This helium-free method is based on pressure decay measurement using pressurised air. This is suitable for gross leak detection or parts with no particular tightness requirements.

Pressure Decay Leak Testing