| 摘要 |
Device for measuring by reduced pressure the airtightness of a valve on its seat. The invention relates to a device operating using a supply of compressed air and measuring the airtightness of a valve by reading on a vacuum meter 9 the vacuum created in the chamber 13 which closes the valve by the passage of compressed air in a venturi tube 6. It is constituted by a supply tube 2, by a box containing: a pressure reducer 3, a connection part 5, a venturi tube 6, a vacuum meter 9, by a connection tube 10, by the air drain 12 for putting under vacuum the chamber 13 whose airtightness is to be measured. The device according to the invention is intended in particular for monitoring the airtightness of valves on their seats before their mounting in the case of manufacture or before their disassembly in the case of diagnosis. <IMAGE>
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