DELTA-VB vacuum system for leak testing

The DELTA-VB vacuum leak test detects leaks in welded joints using the bubble emission technique.

DELTA-VB vacuum system for leak testing

The DELTA-VB Vacuum System is a high-performance solution for leak detection and tightness testing of tanks, vessels, pipelines, and other structures. Using the bubble emission technique, it complies with standards such as ASTM E515-11 and DIN EN 1593, ensuring reliable results in non-destructive testing (NDT).

Key Features

1. Versatile Applications
   • Effectively tests welded joints in unclosed sheet structures with one-sided seam access.
   • Ideal for tank bottoms, vessel elements, underground storage shells, pipelines, and protective structures in various settings, including swimming pools.
2. Customizable Configurations
   • Available in multiple sizes and shapes to test butt, lap, ring, and corner welded joints.
   • Compatible with flat, wavy, spherical, cylindrical, and uneven surfaces, as well as tight corners formed by three perpendicular surfaces (e.g., floor and walls).
3. High Sensitivity
   • Leak detection threshold: 10⁻4 m³Pa/s, ensuring detection of even the smallest leaks.
4. Efficient Performance
   • Inspection capacity: ≥50 m²/hour, making it a time-efficient tool for large-scale testing.

Principle of Operation

The DELTA-VB Vacuum System operates based on the bubble emission principle:

1. The welded joint is pre-coated with a foaming indicator solution.
2. A vacuum box creates an air pressure drop in the cavity over the joint.
3. Through-hole defects are visually identified by observing gas bubbles forming in the foaming solution film or the liquid that fills the vacuum box cavity.

This method provides fast and precise leak detection across diverse surfaces and welding configurations.

Product Range

DELTA-VB300 Vacuum Box

• Designed for standard inspections of welded joints in flat or slightly curved structures.
• Lightweight and portable for convenient field use.

Corner Vacuum Box DELTA-VB300-2

• Specially engineered for testing inside corners where the bottom meets the sidewall at 90-degree angles.
• Perfect for inspecting tank bottoms, walls, and other tight spaces.

DELTA-VB600 Vacuum Box

• Built for large-scale testing of extensive weld seams, ideal for pipelines and large storage tanks.
• Features a broader inspection window for high-efficiency operations.

SYSTEM CONFIGURATION

The vacuum system consists of the following components:

1. Vacuum pump, capacity not less than 50 L/min.
2. Filter.
3. Set of vacuum boxes:

3.1 Vacuum box DELTA VB-300 (including pneumatic switch with vacuum gauge) — 1 pc.

3.2 Corner Vacuum box (corner) DELTA VB-300-2 (including pneumatic switch with vacuum gauge) — 1 pc.

4. Vacuum hose (or oxygen hose), length 20 ± 0.5 m.
5. Power extension cord, length 20 ± 0.5 m.
6. Storage and transportation Rolling Tool Box (94x59x59 cm) — 1 pc.
7. Total weight, not more than 25.0 kg.
8. Technical documentation.

Applications

The DELTA-VB Vacuum System is widely used in:

• Storage Tank Testing: Ensuring leak-tightness of tank bottoms and shells.
• Pipeline Inspections: Detecting weld leaks in pipelines, including large-diameter models.
• Infrastructure Maintenance: Inspecting protective shells and pool linings.
• Vessel Integrity Testing: Confirming tightness of welded joints in critical vessel components.

Why Choose DELTA-VB?

• Accuracy: High sensitivity ensures detection of even micro-leaks.
• Flexibility: Wide range of box designs for various joint types and structures.
• Efficiency: Rapid inspection capability reduces downtime and labor costs.
• Reliability: Compliant with international NDT standards for guaranteed results.

Order Your DELTA-VB System

Ensure leak-tightness and structural integrity with the DELTA-VB Vacuum System.

Contact us today for more details about the DELTA-VB300, DELTA-VB300-2 Corner Box, and DELTA-VB600.

Applications of the DELTA-VB vacuum leak test

The DELTA-VB vacuum leak test is used for leak detection and tightness testing of tanks, vessels, pipelines, and other structures with one-sided seam access.

Inspectors apply the DELTA-VB vacuum leak test to butt, lap, ring, and corner welded joints on flat, wavy, spherical, cylindrical, and uneven surfaces, including tank bottoms and underground storage shells.

The DELTA-VB vacuum leak test complies with ASTM E515-11 and DIN EN 1593, making it suitable for non-destructive testing in petrochemical, storage, and construction industries.

DELTA-VB vacuum leak test key features

• The DELTA-VB vacuum leak test detects leaks down to 10⁻⁴ m³Pa/s using the bubble emission technique.
• Inspection capacity of at least 50 m²/hour makes the DELTA-VB vacuum leak test efficient for large-scale work.
• Tests butt, lap, ring, and corner welded joints, including corners formed by three perpendicular surfaces.
• Compatible with flat, wavy, spherical, cylindrical, and uneven surfaces.
• Complies with ASTM E515-11 and DIN EN 1593 for non-destructive testing.

Related instruments: vacuum leak testing instruments.