Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . r for regrind-ing the valve. S is the pipe that leads from the injector. In order to regulate the flow of water to the injector,it is necessary to have a valve, Fig. 254, placed in thepipe. The handle H can be made of metal as this valverarely gets hot. P and P are pipes whose inside diametershould be equal in cross sections to the pipe specified bythe makers of the injector. A blower valve is represented in Fig. 255. As it isnot necessary to have perfectly dry steam, it is tappedinto the bo
Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . r for regrind-ing the valve. S is the pipe that leads from the injector. In order to regulate the flow of water to the injector,it is necessary to have a valve, Fig. 254, placed in thepipe. The handle H can be made of metal as this valverarely gets hot. P and P are pipes whose inside diametershould be equal in cross sections to the pipe specified bythe makers of the injector. A blower valve is represented in Fig. 255. As it isnot necessary to have perfectly dry steam, it is tappedinto the boiler with a taper thread at T. P is a blowerpipe and H the handle for controlling the flow of steam. Fig. 256 represents a sectional view of one of theseblower valves. The stem S has a screw on it as shownand the end being long, any slight eccentricity can be off-set by the spring. This style is made by numerous man-ufacturers and must be attached to the boiler by means ofa pipe nipple. A whistle valve is seen in section in Fig. 257. Thisis one of the balanced type and does not require the dead 260. Figure 252
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Keywords: ., bookcentury1900, bookdecade1910, bookidlocomotivebo, bookyear1912
