Vacuum Box for Leak Testing with Interchangeable Base (BAV-4025)
Suggested Price : From 1400 € Excl. VAT
🛈 Prices may vary depending on configuration, location, and distributor policy. Please contact us or your local representative for an exact quote.



Non-contractual photo
High-performance vacuum box (400 x 250 mm) designed for leak testing on flat welds, lap joints, lap welds, and internal or external circular welds depending on curvature radius.
Its innovative design and advanced features make it a benchmark solution on the vacuum box leak testing market.
VACUUM BOX - PRESENTATION AND APPLICATIONS
High-Performance Vacuum Box for Precise Leak Testing – BAV-4025
The BAV-4025 is a compact, versatile vacuum box (400 × 250 mm) designed for precise leak testing of flat welds, lap joints, curved seams, and complex geometries. This model is particularly well-suited for lap weld inspection thanks to its flexible foam base and compatibility with silicone spacers, ensuring optimal seal contact even on challenging shapes.


🟦 Flat and Curved Weld Testing
- In its standard configuration, the BAV-4025 comes with a 35 mm high-compression foam base, ideal for flat seams, shallow weld geometries, and large-radius curves. This setup provides a tight, uniform seal for most standard applications.
- For more pronounced curves or irregular geometries, the optional 45 mm foam base can offer greater flexibility and sealing performance, allowing the box to better conform to complex profiles.


🟧 Lap Weld Testing
For lap welds, the configuration depends on the height of the joint:
- Up to 15 mm lap welds: Use the standard 35 mm foam base in combination with silicone spacers (BAV-090). This setup allows the foam to adapt to moderate offsets while maintaining a reliable vacuum seal.
- Up to 25 mm lap welds: For deeper or more irregular lap welds, we recommend the optional 45 mm foam base, which provides greater flexibility and compression, always used with silicone spacers for optimal sealing.
Note: The actual lap weld height that can be effectively sealed may vary depending on the sharpness of the joint and the surface finish.
VACUUM BOX - KIT COMPOSITION

Ref : BAV-A200-00X – Vacuum Box Kit BAV-4025
- Viewing window includes :
- Vacuum gauge
- Hybrid vacuum system
- Handling grip
- Quick control valve
- Insert for optional lighting
- Base assembly includes :
- Factory-bonded foam
- Sealing gasket
- Inserts for window fixation
- Connection hose :
- 50 cm hose with quick coupling to claw coupling for Venturi effect vacuum system
VACUUM BOX - MAIN FEATURES AND ADVANTAGE
TWO PARTS MODULAR DESIGN

- Independent inspection window including all elements necessary for inspection processing (vacuum gauge, hybrid vacuum system, and handling grips)
- Height of the inspection chamber at least 2cm to facilitate indication interpretation
- Interchangeable base for:
- Quick maintenance
- Modularity / configuration change
HYBRID VACUUM SYSTEM
- Aluminum and stainless steel design for enhanced durability
- Integrated into the window to ensure mechanical protection

- Venturi effect vacuum
- Airflow regulation valve on the Venturi side
- Quick coupling Rectus type 23 male

- Vacuum pump suction
- Aluminium control valve
- Quick coupling Rectus type 21 male
CONTROL VALVE

Our vacuum boxes include an anodized aluminum quick-control valve system performing the following functions:

- Quick adjustment of the vacuum pressure using either the Venturi effect or a vacuum pump
- Release valve for eliminating the vacuum and immediately detaching the vacuum box
VACUUM ADJUSTMENT AND REGULATION

- Integrated vacuum gauge within the window for mechanical protection
- Easily removable with a single nut
- Measurement range: 0 to -1 bar
- Calibration certificate available as an option

- Flow regulation valve with venturi effect mode
- Can be used for fine vacuum adjustment when a vacuum pump is in use
HIGH PERFORMANCE FOAM

- High resistance to abrasion
- Flexibility 40/50 shore 00
- Standard foam heights of 35 mm
- High deformation and clearance capacity (around 20mm for standard foam and around 30 mm for 50 mm foam with silicone spacers option)
- Innovative geometry to ease application and reduce effort
- High resistance adhesive bonding
- Resistant to hydrocarbons and most chemicals
VIEWING WINDOW

With its two-part design, the vacuum box features a 15 to 20 mm high viewing window that allows for clear interpretation of readings during inspections.
VACUUM BOX - OPTIONS
LED LIGHTING
Ref : BAV-A050
Led lighting option for all BAV vacuum box series

Removable, battery-powered LED lighting system designed for all BAV vacuum box series.
This accessory makes it easy to achieve the minimum required lighting level during your vacuum box leak inspections.
TRANSPORT CASE
Ref : BAV-A230
Rugged transport case for BAV4025

To ensure safe transport and extend the lifespan of your vacuum box, we offer an optional reinforced carrying case with a machined insert to securely hold the box and prevent any movement during transit.
VACUUM GAUGE
Ref : BAV-A030-2
Vacuum gauge with calibration certificate

We standardly provide a CE-certified but uncalibrated gauge. Therefore, we offer an option of a calibrated gauge with a verification certificate for your standardized inspections.
VACUUM BOX - DATASHEET
TECHNICAL SPECIFICATIONS
DETAILS
Reference
BAV-A200-001 / 002 – Vacuum Box Kit BAV-4025 with 35 mm / 45 mm foam
Foam height
35 mm / 45 mm
Foam hardness
≈ 40 shore 00
Dimensions
L450 x W250 x H130 mm
Viewing area
L310 x W160 mm
Weight
4,5 Kg
Pressure gauge vacuum range
-1 to 0 Bar / -100 to 0 KPa / -30 inHg
Max vacuum
-0,9 Bar / -90 Kpa / -26,5 inHg
Downloadable file :
VACUUM BOX – RELATED ACCESSORIES AND PRODUCTS
SILICONE SPACERS KIT
Ref : BAV-090
For vacuum box inspections of lapwelds
