. A textbook on the locomotive and the air brake . nmst be placed at the bottomof one of these loops and in the circuit near the Baker heater;this cock should have ■ two plug cocks in its side loop that carries this filler cock need not have the fittingabove alluded to. All the outflow pipes rise when leavingthe jacket. The expansion drum is provided with the safetyvalve v, set for 125 pounds per square inch. To adjust thepressure, slacken the nut on the top of the device, and thenscrew down the plug to increase the pressure, and unscrew itto lessen same. Then lock by means of the
. A textbook on the locomotive and the air brake . nmst be placed at the bottomof one of these loops and in the circuit near the Baker heater;this cock should have ■ two plug cocks in its side loop that carries this filler cock need not have the fittingabove alluded to. All the outflow pipes rise when leavingthe jacket. The expansion drum is provided with the safetyvalve v, set for 125 pounds per square inch. To adjust thepressure, slacken the nut on the top of the device, and thenscrew down the plug to increase the pressure, and unscrew itto lessen same. Then lock by means of the nut. If the springinside should get coated with salt deposit, remove the wholefitting from the drum and soak it in hot water; clean the seatof the valve and replace. §13 CAR HEATING. 75 FILLER COCK, 89. The special filler cock is shown in section in Fig. should be placed in the lowest point of the system and asnear the Baker heater as practicable. The circulation piping isconnected at a and b, the latter being the end nearest the Baker. Fig. 33. heater; c is the main cock, and d and e two draw-off figure shows the device in its usual position—open. To blow out obstructions in the heater pipes, close the cock cand open d and e. Connect steam with d and leave e openuntil everything is thoroughly blown out. To fill the pipes, close c and pump water in at d until it flowsout clear and freely at e. Continue this until air and dirt havebeen driven out of the pipes. Then close e and rf and open c,bringing the device into the position shown in Fig. 33, which isits condition at all times except when conducting the aboveoperations of blowing out or filling the pipes. The position ofeach of the cocks is denoted by a groove on the end of theshank,each groove running in the same direction as the openingin the cock. STEAM TRAP. 90. Fig. 34 shows the trap used in connection with theheating jacket J, Fig. 32. It is arranged so as to be appliedeither to vertical or to hori
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
