Industry Resources

Non-Destructive Testing Program

Penflex uses a range of ASME and ASNT compliant Non-Destructive Testing (NDT) methods to identify leaks and assess the structural integrity of hoses and hose assemblies. Deciding which NDT method, or combination of methods, to use depends on whether we are inspecting hoses or hose assemblies.

When inspecting hoses, we look for leaks along the longitudinal seam or at the point where hose segments have been welded together.

Certified Penflex operators use one of the following nondestructive testing methods, listed in order from least to most sophisticated.

  • Visual Inspection
  • Submersion Bubble Leak Test (Air Underwater Test)
  • Film Solution Leak Test
  • Automatic Gas Spectrometer
  • Manual Gas Sensitive Leak Test
  • Helium Mass Spectrometer
  • Hydrostatic Test

When inspecting hose assemblies, in addition to a Visual Inspection, one or both of the most common leak detection methods may be used: a Submersion Bubble Leak Test or a Hydrostatic Test.

Depending on the application, the purchaser may specify a different nondestructive testing method for their corrugated hose assembly. For instance, to test at pressures greater than 75 PSI, a High Pressure Gas Leak Test may be used and in applications involving molecules smaller than air, a Helium Mass Spectrometer may be used to test for leaks.

Penflex carries out testing at our lab in Gilbertsville, PA where we can also offer Liquid Penetrant Inspection (PT) and Bore Scope Examinations. Our in-house team of SNT-TC-1A Level II Non-Destructive Examiners (NDE) are qualified to perform NDT inspections. They are also certified to ASME Section V Articles 6, 7, 9, and 10.

The videos below explain our various NDT methods in detail.