標準號：IS 9199-1979
發布日期：1980/6/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：Prescribes dimensions, tolerances, material requirements of inspection gauges recom-mended for checking the taper threads on the valve stems and the threads in the cylinder necks of valve fittings conforming to Type 3 of IS : 3224-1979 ' Specification for valve fittings for compressed gas cylinders excluding liquefied petroleum gas ( LPG ) cylinders (second revision )' or Type 3 of IS : 8737 ( Part I )-1979 ' Specification for valve fittings for use with liquefied petroleum gas ( LPG ) cylinders of more than 5 litre capacity: Part I Valve fittings for replacement purposes'.Note —This type of thread also conforms to BS 1095:1943 Metric screw threads, Systeme Internationale (SI). British Standards Institution.