as applied to gas, specific gravity is the ratio of the weight of a given volume to that of the same volume of air, both measured at the same temperature and pressure. Advertisements
an increase in temperature that occurs while cooling metal through a range of temperatures in which change in structure occurs.
a testing procedure using water to locate potential leaks, or defects, and to determine the soundness of a system.
a test for leakage using peppermint and heated or hot water as the medias, and the sense of smell as the determining factor.
a testing procedure using smoke to locate potential leaks, or defects, to determine the soundness of a system(s).
knife used for cutting thin sheet lead (up to ten pounds) A straight handled knife with a hook on the end for a blade. A pocket knife or knife similar to a linoleum cutting knife may be substituted.
a measure of the probable hydraulic demand on the water supply by various types of plumbing fixtures. The valve for a particular fixture depends on its volume rate of supply, on the time duration for a single operation, and on the average time between successive operations.