Custom Solution | Helium Hard Vacuum System for Refrigeration Assemblies

An aerospace equipment manufacturer required a Hard Vacuum System for Refrigeration Assemblies that could test multiple product models using several leak test methods. The process needed to include nitrogen proof testing and gross leak testing before completing high-sensitivity helium hard vacuum testing. In addition, the customer required automated control of test sequences, leak limits, and pressure levels.

To meet these requirements, we engineered a turnkey leak test system that integrates all test stages into a single automated workflow. The system uses a large 48″ DIA X 86″ L horizontal vacuum chamber that encloses the assembly on sliding rails and seals against a precision-machined bulkhead. A high-pressure booster increases nitrogen pressure for proof testing, while custom controller software manages test recipes and acceptance criteria. As a result, the system delivers repeatable results across multiple refrigeration assemblies with controlled cycle times and reliable data capture.