Leak Testing Case Studies: Plastic Sump Pipe Leak Test and Assembly

Client: Tier 2 Automotive Plastic Engine Part Manufacturer

Part: Plastic sump pipe assembly

Machine supplied: Twin fixture automatic insert assembly and leak test machine

Overview: This system was designed and manufactured in order to give the customer the ability to assemble and test plastic sump pipes within their production environment. TQC developed this system alongside the client to allow them to insert compression limiters (ambient temperature), insert brass inserts (hot) and leak test the finished assembly.
Download details of this system as a PDF

Vacuum leak test / hot insert / cold insert

  • Simple to operate
  • Floor to floor cycle time of 35s for 2 assemblies per cycle
  • 80% Vacuum Leak Test
  • 1 Hot Insert (2500C)
  • 2 Cold Inserts
  • Contolled by a PLC
  • Calibration satisfies the requirements of ISO9000

This machine combines TQC's experience of leak detection and automatic inserting. In the case of this machine, if the leak test fails, the automatic inserting process will not actuate.

Vacuum Leak Test

The test pieces and the reference volume are simultaneously evacuated. The air in the system is then allowed to stabilise, with the supply valves all closed. The differential pressure is then measured using a transducer.


Both types of insert are presented to the component by a combination of vibrating bowl feeders and automatic handling system. There are two oval inserts and one hot insert which is automatically melted into the plastic.

Safety guard system

A well proven safety system, built to UK and European safety standards allows a fast loading and unloading of the test pieces.

Full documentation

The equipment is supplied with full CE marking, operator and service manuals, spares lists and maintenance wiring diagrams.

To find out more about how we can help you with your leak testing requirements:

We build all machines in-house, applying our 25+ years experience in specialised test and automated handling machines experience to the engineering projects we undertake. We offer customer support, backup and service call-out for all projects, whatever the size.

Get in touch with us to discuss your requirements and we will be happy to offer our professional advice and visit you at your site.

TQC Ltd, Hooton Street, Carlton Road, Nottingham, NG3 2NJ, United Kingdom
Tel: +44 (0)115 9503561   |   Fax: +44 (0)115 9484642   |   E-mail: sales@tqc.co.ukSGS