Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 48
noting this relation. When he haswashed out his boilers he may leave the top man-holeplates out while refilling them, and when the waterstands at about four inches over the top row of tubes,the depth of water in the glass should be measured.He should do this with every boiler in the plant, andmake… … m claves grates, in having them altered to comform to the requirementsof safety. The position of the lower gauge cockshould be three inches above the top row of tubes. In making connections for the water column pluggedcrosses should always be used in place of ells. Brassplugs are to be preferred if…
