Leak Testing Machines
Manufacturer · Bhosari, Pune
Leak Testing Machine Manufacturer in India
VR Automation designs and manufactures automatic air leak
testing machines using the pressure decay method — delivering an
objective PASS/FAIL result in seconds, with every machine built around your component.
We replace water-bath bubble testing with a dry, repeatable, recordable measurement that can be
logged against a part number for customer audit and traceability.
0–50 barTest pressure range
1×10-5mbar·l/s sensitivity
PLC + HMIAutomatic control
PASS / FAILObjective result
Machine Features
Pressure Decay Testing
Seals, fills, stabilises and measures pressure drop across a fixed window — the proven method for sealed components.
PLC & HMI Control
Touchscreen operator interface with recipe storage, so one machine tests multiple part numbers without re-qualification.
Automatic PASS / FAIL
Judgement made by the PLC against a programmed limit — the result never depends on who is on shift.
Data Logging
Test results recorded and exportable against the part number for traceability and customer audit requirements.
Custom Sealing Fixtures
Every sealing fixture is engineered to your component’s ports, geometry and clamping needs — built in-house.
Inline Integration
Standalone bench, semi-automatic or fully inline with automatic clamping, loading and rejection of failed parts.
Technical Specifications
| Test method | Air pressure decay (differential and gauge pressure) |
|---|---|
| Test pressure range | 0 – 50 bar, configured per component |
| Leak rate sensitivity | Down to 1 × 10-5 mbar·l/s |
| Control system | PLC based with HMI touchscreen operator interface |
| Result output | Automatic PASS / FAIL, no operator interpretation |
| Data handling | Test result logging and export for traceability |
| Test parameters | Fill, stabilisation, test time and reject limit stored as recipes |
| Configurations | Standalone bench, inline, multi-station, automatic rejection |
| Other methods | Differential pressure, vacuum decay, mass flow leak testing |
| Manufacturing | Designed, built and tested at Bhosari, Pune · supplied PAN India |
How Pressure Decay Leak Testing Works
Fill
The sealing fixture closes on the component and air is admitted until the programmed test pressure is reached.
Stabilise
A dwell lets compression heating settle. Skip this and thermal effects read exactly like a leak — the commonest cause of false rejects.
Test
Supply is isolated and pressure drop is measured across a fixed window, then compared to the reject limit.
Judge
The PLC issues PASS or FAIL, logs the result, and on automatic systems diverts rejected parts.
Industries & Production Types We Serve
Automotive & Auto Components
Engine, transmission, braking, cooling and fuel system parts on high-volume production lines.
Foundries & Die Casting
Porosity detection on aluminium and pressure die castings before machining value is added.
Plastic Moulding
Injection and blow moulded components, containers, tanks and fittings with extended stabilisation.
Tube, Pipe & Hose
End-sealed testing of metal, plastic and hydraulic lines without deforming the tube.
Hydraulics & Pneumatics
Valve bodies, manifolds, cylinders and pump housings tested at working pressure.
EV & Electrical Enclosures
IP-rated sealed battery enclosures, housings and connector assemblies.
Production types: prototype and R&D validation · batch and job-work
· high-volume mass production · inline 100% end-of-line inspection · goods-inward incoming inspection.
Popular Components We Build Leak Testers For
Sealing fixture and test recipe are engineered per part. These are the components we are asked for most often:
Engine blockCylinder head
Cylinder blockGearbox housing
Transmission housingAxle housing
Axle carrierBrake drum
Brake caliperMaster cylinder
Intake manifoldExhaust manifold
Valve bodyRadiator
Water pump housingFuel tank
Fuel railFuel injector
Fuel pipe & hoseEV battery enclosure
Aluminium castingsDie cast housings
Pump & compressor housingsPlastic containers
Blow moulded tanksPlastic pipes & fittings
Cylinder blockGearbox housing
Transmission housingAxle housing
Axle carrierBrake drum
Brake caliperMaster cylinder
Intake manifoldExhaust manifold
Valve bodyRadiator
Water pump housingFuel tank
Fuel railFuel injector
Fuel pipe & hoseEV battery enclosure
Aluminium castingsDie cast housings
Pump & compressor housingsPlastic containers
Blow moulded tanksPlastic pipes & fittings
Industrial Use & Quality Standards
Repeatable & Objective
Machine judgement against a programmed limit removes operator subjectivity inherent in bubble testing.
Traceability Ready
Logged results per part number support customer audits, PPAP submissions and internal quality records.
Built & Tested In-House
Machined, assembled, calibrated and run-off at our own Pune facility before dispatch — never traded.
Long-Term Support
Installation, operator training, spares and service across India for the working life of the machine.
Our Leak Testing Machine
Leak Testing Machine
Air pressure decay leak tester with PLC control, HMI recipe selection and automatic PASS/FAIL
output. Sealing fixture built to your component. Available as a standalone bench unit or
integrated inline with automatic rejection.
Leak Testing Machine Price
Price depends on test pressure, number of stations, sealing fixture complexity and level of
automation — a single-station bench tester and a fully inline system with automatic rejection are
very different machines. Rather than publish a misleading figure, we quote against your actual component.
To receive a quotation, send us:
- Component drawing or sample details
- Material and internal volume
- Required test pressure and maximum permissible leak rate
- Target cycle time and production volume per shift
- Whether you need standalone, inline or fully automatic operation
Frequently Asked Questions
What is a leak testing machine?
A leak testing machine seals a component, pressurises it with air and measures whether pressure is lost over a fixed test window. If the drop exceeds the programmed limit the machine issues a FAIL. It replaces water-bath bubble testing with a dry, objective, recordable result.
How does a pressure decay leak tester work?
The component is sealed and filled to the set test pressure, the pressure is allowed to stabilise, then the air supply is isolated and the pressure drop is measured over the test window. That decay is compared against a reject limit and the machine gives an automatic PASS or FAIL.
What test pressure range do your machines cover?
Our leak testers are built for test pressures from 0 to 50 bar, set per component. Low-pressure work such as plastic tanks and high-pressure work such as fuel rails are both covered, with pressure configured as part of the test recipe.
What leak rate can the machine detect?
Sensitivity extends to 1 × 10-5 mbar·l/s. The practical detectable leak rate for your part also depends on its internal volume and the test time your cycle allows, so we confirm this against your component before quoting.
Can one machine test more than one component?
Yes. Test pressure, stabilisation time, test time and reject limit are stored as recipes on the HMI, so one machine can test several part numbers. Each part normally needs its own sealing fixture.
Do you supply automatic leak testers for production lines?
Yes. We supply inline automatic leak testing systems with automatic clamping and sealing, PLC-controlled test cycles, automatic rejection of failed parts and data logging for traceability.
Are you a manufacturer or a supplier?
We are a manufacturer. Design, machining, assembly, testing and dispatch all happen at our own facility in Bhosari, Pune, and we supply across India.
Get a Leak Testing Machine Quotation
Send your component drawing, test pressure and permissible leak rate. Our engineers will
recommend a configuration and quote a price.
