. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . ough the injector freely until the instrumentis cool the globe valve may be opened and the injectorwill go to work. THE SIPHON TANK CONNECTION. Some engines are equipped with what is known as theSiphon tank connection, which is used in place of the oldstandard tank valve. This type of water connection hasa decided advantage over the old form of tank valve, as itis more easily and economically applied. It also elimi-nates the necessity of the strainer in the hos
. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . ough the injector freely until the instrumentis cool the globe valve may be opened and the injectorwill go to work. THE SIPHON TANK CONNECTION. Some engines are equipped with what is known as theSiphon tank connection, which is used in place of the oldstandard tank valve. This type of water connection hasa decided advantage over the old form of tank valve, as itis more easily and economically applied. It also elimi-nates the necessity of the strainer in the hose connections,which frequently becomes clogged, and is one of the mostfrequent causes of injector failures. With the deviceshown in Plate 10 there can be no flooding of the tank organgway due to leakage of water at the tank valve-stem,which is always an element of danger, in cold or freez-ing weather. In addition to this, the annoyance of dis- SIPHON TANK CONNECTION. 69 connected tank valves, which necessitates the drainingof the tank in order to permit their reconnection, iseliminated. It is also more easily kept from PLATE TANK CONNECTION One of its principal advantages over the old style tankvalve is that it permits the use of a larger strainer withsmall openings, which allows a sufficient supply of waterto enter the feed pipe and prevents foreign matter fromentering the feed pipe and being drawn into the injector,stopping up the nozzles and tubes. To Clean the Strainer on a Siphon Tank the strainer on a siphon tank connection becomesclogged, it can temporarily be cleaned without stoppingthe engine, by closing the heater cock and opening the 70 STEAM-HEAT REDUCING VALVES. throttle full}r, blowing the steam back into the tank,which removes all matter which has been drawn to thestrainer on its exterior side. To clean the strainer andtrap thoroughly the tank should be empty, plug A in thetrap removed, allowing the steam to blow back sufficie
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