The BAV-40IC is a vacuum box from Flying Vision, specifically designed for non-destructive testing (NDT) of 90° internal corner welds . This triangular “bubble box” solution provides reliable leak testing in internal corners found in tanks, containers, flat roofs with membranes and mechanically welded structures.

Key features and benefits

• Two-piece modular design with interchangeable base, providing flexibility for different surface and weld configurations.

• Built-in hybrid vacuum system: supports both Venturi effect (compressor) and suction via vacuum pump.

• Clear viewing opening of approximately 2 cm makes it easier to see bubbles during testing, providing confident and clear interpretation.

• Robust sealing foam with triangular geometry , which increases deformation and provides good contact with the surface during testing.

• The foam has high abrasion resistance and is resistant to hydrocarbons (35 mm height, 40/50 Shore 00) according to technical specifications.

• Reliable vacuum control with pressure gauge and quick release valve for quick separation when the test is finished.

• Optional options: reinforced transport case, calibrated vacuum gauge and optional vacuum pump (model PAV-2209).

Technical specifications

• Dimensions: 490mm × 270mm × 130mm .

• Weight: approx. 4.2 kg .

• Vacuum measurement: down to –1 bar.

• Materials: Main part in aluminum / plexiglass, base in plexiglass + closed-cell foam.

• Sealing foam: 35 mm high closed-cell foam, Shore 40/50.

Areas of application

• Leakage inspection of flat internal fillet welds, especially in tanks and metal structures.

• Use in industrial facilities with requirements for tight documentation, e.g. petrochemical, tank building and shipbuilding industries.

• Field work where fast, repeatable leak measurement of angle joints is critical.

• Inspections of 90° corners in both metallic and non-metallic surfaces.