Product introduction: The expansion valve helium inspection equipment is a kind of equipment that uses helium as a tracer gas and can measure the overall loss of the component. The component to be tested is inserted into the vacuum chamber or analysis chamber. Then, the chamber is exhausted, and the component will be pressurized by the helium gas. When the appropriate vacuum value is reached, the mass spectrometer will be connected to the analysis chamber, so as to measure the amount of helium overflow at the tested product. It has significant characteristics such as high sensitivity and high reliability, and can realize semi-automatic operation, and can quickly and accurately detect the leakage situation of the expansion valve.