摘要：Used residual spray nozzles, which have been discarded because of the increase in discharge rates, may be used again if their discharge rates are reduced by a metering orifice placed in the nozzle tip. A suitable orifice in a polyethylene disc is described. On the basis of laboratory test results, such a disc appears to be an inexpensive and satisfactory metering device for use in combination with worn spray nozzles. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (490K), or click on a page image below to browse page by page. 955 956 957 958 959
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