• About Us
• Product Datasheets
• Video Clips
• Latest News

• Basic Principles
• Useful leak specification guidelines
• Leak Test Machines

• Series 10 Standard Leak Testing Fixture
• Series 20 Standard Leak Testing Fixture
• Series 40 Standard Leak Testing Fixture
• Twin Station Series 40 Standard Leak Testing Fixture
• Series 40 Standard Leak Test Machine with Interchangeable Fixtures

• TQC Equipment
• 'Chilled Beam' Leak Test
• Fuel Rail Leak & Burst Testing
• Fuel Tank Leak Testing
• High Speed Leak Testing of Plastic Vials for the Medical Industry
• High Speed Leak Testing of Pipe Fittings
• Leak Testing of Engine Blocks
• Plastic Sump Pipe Leak Test & Inserter
• Leak Test, Flexible Facility
• Leak Test Facility for Water Valves
• Medical Device Leak Testing
• Medical Filter Leak Test Machine
• Medical Shower Head Leak Test Facility
• Small Medical Device Leak Test
• V6 Engine Leak Testing
• Vauxhall Leak Test Machine
• Water Submersal Leak Detection
• Weapon Leak Test

• Nolek Equipment
• Nolek S9
• Nolek TS 500
• Nolek C9 calibration unit
• Nolek Automatic Connectors
• HEDOS Leak Testing System
• Leak Test Instrument Accessories
• Nolek Worldwide

• TQC Home Page
• Leak Test Machines
• Assembly Automation
• Test Machines
• Plastics Machines
• Engineering Design Services

leak testing machines
standard machines & bespoke solutions
The test method used depends on the application and the leak rate that is acceptable, these principles are outlined on the Basic Principles Page.
TQC Ltd specialise in automatic leak testing of components using water submersal, air decay, vacuum or helium methods.

Pressure/Vacuum - for these systems, TQC are UK agents for the Nolek range of leak measurement instruments. Test pressures between vacuum and 16bar (150psig) are available as standard. Leak measurement may be made down to a resolution of 1 atm.mm3/sec. All test parameters may be programmed into the instruments, and the result data is available for subsequent SPC analysis.

Helium Systems - for these systems, TQC Provide complete test facilities utilising leak test instruments and pumping groups from Varian or Adixon (New Brand Name from Alcatel Vacuum Technology). Helium leak testing, is generally used for specifications which are too stringent for pressure decay, or where the component is large in volume or not stable in shape or temperature. The leak measurement resolution may be typically 1 x 10-6 atm.mm3/sec.

pressure decay	vacuum decay	helium detection
Lowest cost Simple to understand Direct value results Direct calibration Temperature dependent Component must be stable	Limits temperature effects Assists sealing loading Reduced stabilisation time Often a faster throughput Indirect leak calculation Complex fault detection	Most sensitive (x 106) Independent of temperature   Independent of volume High throughput Most expensive Most complex

(Photographs are of equipment for (top) Rover Group, (centre) Van Leer Packaging, and (bottom) Nissan UK)

key benefits of using TQC

25 years Experience in specialised test & handling equipment

Professional & Flexible approach to all engineering tasks bestowed upon us

All work completed in house - so the buck stops here!

24hour Customer support, backup and service call-out for all projects large and small

test equipment capabilities

TQC combines extensive experience with a modular approach. The best modern data capture methods and proven software techniques are engineered into your production environment to provide reliable and easily maintainable equipment.

If you have a current project that you are already looking at, or you are considering improvements to your production in the near future, call us and we will be happy to offer our professional advice & visit you at your site.