Laying out for boiler makers and sheet metal workers; a practical treatise on the layout of boilers, stacks, tanks, pipes, elbows, and miscellaneous sheet metal work . ld be secured direct to the boiler andnot to any other pipe. It should not be connected to the drypipe, as it is a small pipe and will work satisfactory from theboiler direct. It will work unsatisfactory if taken from oneof the branches of the auxiliary steam pipe, as there seems tobe water pocketed somewhere, and every time the whistle isopened this water is picked up and blown out through the shallow funnel-shaped disc, made o
Laying out for boiler makers and sheet metal workers; a practical treatise on the layout of boilers, stacks, tanks, pipes, elbows, and miscellaneous sheet metal work . ld be secured direct to the boiler andnot to any other pipe. It should not be connected to the drypipe, as it is a small pipe and will work satisfactory from theboiler direct. It will work unsatisfactory if taken from oneof the branches of the auxiliary steam pipe, as there seems tobe water pocketed somewhere, and every time the whistle isopened this water is picked up and blown out through the shallow funnel-shaped disc, made of plate steel, from 12 to16 inches in diameter; the pipe is connected somewhere atthe bottom according to the space available; the top of thepan is usually located about 4 inches above the top of theboiler tubes; the outboard end of pipe is expanded into theopening in shell (although some times it has a flange on itand is held in place by the same bolts that secure the valve) ;the valve flange has a spigot end on it which enters into thepipe where it is expanded into the shell, and the flange se-cured to the shell by through bolts, the nuts being on AuxiliaryStop and CheckTaWe. Brace for Pijie. FIG. I.—END ELEVATION. ?whistle, thereby delaying the time the whistle should sounduntil all the water is blown out through it. The surface blow valve should be located in some con-venient place on the shell. In reference to the manner of securing this valve there is adifference of opinion among engineers as to having it se-cured with the pressure under or on top of the valve; if se-cured with the pressure on top of the valve and the valve ordisc is guided with wing guides, it would seat in the case ofthe stem breaking, which is an advantage, and about theonly advantage that can be claimed for securing it in such amanner. The valve usually has an internal pipe fitted to it,extending to about the middle or center of the water sur-face; the inboard end is fitted with a scum
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Keywords: ., bookcentury1900, bookdecade1900, bookidl, booksubjectsteamboilers
