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Pressure Decay Leak Testing

Principles of VeriCon Technology

VeriCon systems utilize either pressure decay or vacuum decay technology and a basic 3-step phase to each test cycle: Filling, Equalizing and Testing. Each VeriCon tester consists of either one or more testing stations (test heads). During the testing cycle, the container passes under the test head. During the filling stage, the container is filled with either pressure or for vacuum systems, a vacuum is pulled inside the container. The equalizing phase follows allowing either the pressure or vacuum to stabilize within the container. Then the amount of pressure or vacuum decay is monitored and measured during the test cycle which correlates to the presence of leaks within the container. The pass/fail result displays on the operator panel and the defective container is rejected from the line.

The specification of pressure or vacuum is determined by the type of container and leak size that must be detected. Typically plastic containers of most any size always use pressure decay. Vacuum decay technology is used when the characteristic of the container would make it difficult to detect the presence of a certain size leak using pressure technology.

All VeriCon systems utilize high resolution non-drifting transducers (either pressure transducers or vacuum transducers) for consistent leak detection. The number of transducers relates to the number of test stations/heads. VeriCon testers are available in one to four station configurations, depending on the line speed/hole size requirement.


VeriCon Trimmer Systems – available in 1 or 2 station configurations. Trimmer mount systems are designed specifically for installation in indexing systems. VeriCon Model 126/TR the most reliable trimmer system available on the market today.

VeriCon Linear Testers – available in one or two station configurations for standard online linear leak detection. VeriCon Models 126 Linear

VeriCon Continuous Motion – available in 1 to 4 station configurations. Continuous motion allows inspection of containers “on the fly” - completing the test cycle without stopping the container during the entire process. Continuous Motion inspection enables high speed testing with smooth uninterrupted handling using a specially designed feedscrew. VeriCon Models 135, 172 and 175

Container Integrity Testing using Self-Teach – PTI has developed a unique feature, Self-teach, that is used for all VeriCon systems. Self-teach automatically sets the accept/reject criteria by testing a quantity of good samples together with a software algorithm program that sets the reject points. Self-teach saves time and eliminates operator decision making during setup time or when changing over to test a different container size.

Key Benefits of VeriCon
  • Real time inspection data
  • Reject statistics & test result trends
  • Self-teach software
  • Non-drift transducers for consistent leak detection
  • Low false rejects
  • Operator friendly
  • 24/7 operation
  • Increased productivity
  • Reduced downtime
  • Low maintenance

VeriCon 135 Online Continuous Motion Leak Tester

The VeriCon 135 is a single station continuous motion leak tester

VeriCon 172 Online Continuous Motion Leak Tester

VeriCon 175 Online Continuous Motion Leak Tester