Importance

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Abstract

Apparatus for, and method of, through-the-valve testing the pressure levels within pressurized containers, particularly aerosol containers, without dispensing the container contents. The apparatus includes a vertically reciprocal head in which a small charge of gas under greater pressure than the highest pressure level to be tested for is isolated in a small chamber. The head is lowered onto a container being tested and an adapter on the bottom of the head interfaces with the valve on the container. The pressure of the charge in the head is released into the adapter and the container valve is actuated to provide a connection between the container pressure and the higher pressure in the head and adapter. Due to its small volume the pressure in the head and adapter readily equalizes to the level of the pressure in the container. This equalized pressure is sensed by a pressure sensor or transducer connected to the chamber in the head.

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First Claim