. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ter frombeing raised when the gauge cock is op- /( ntally, and that the watei Column and water glasses should stand veil Steam pipe connections to water col-umns and water glasses should be madeas short ,i~ possible, so as to obtain a sup-ply oi drj ~ .it all times am ranged as to thoroughly drain, and befree from short bends or anj possibility of says or traps. It has been definitely es-tablished that where traps or sags thatwill retain the water of condensation arepermitted in the top
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ter frombeing raised when the gauge cock is op- /( ntally, and that the watei Column and water glasses should stand veil Steam pipe connections to water col-umns and water glasses should be madeas short ,i~ possible, so as to obtain a sup-ply oi drj ~ .it all times am ranged as to thoroughly drain, and befree from short bends or anj possibility of says or traps. It has been definitely es-tablished that where traps or sags thatwill retain the water of condensation arepermitted in the top connection to waterglasses H water columns, the readingof the water is materially affected, cansing a higher level to be indicated. It should be home iii mind that whenwater glasses are in proper condition tocorrectly regisur the water in the water is never at rest while under, and that when the water be-comes slow or sluggish of movement or inagitation, it indicates an improper condi-tion that should be immediately correctedSuch conditions are usually caused by re- JrJJ*4LL SJGSL JCSTJ. RECOMMENDED PRACTICE ARRANGEMENT OF GAUGE COCKS AM WAT l I ened wide, the object being to compensatefor the lowering pressure in the columnthrough the larger top connection, thearea of the smallest opening of whichshould be not less than 1_• in. copper pipe,or preferably larger Very recent tests indicate that to avoidthe possibility of inaccurate readings dueto raising the water in the column whenthe gauge cocks are opened excessivelywide, the inside diameter of the columnmay be made 3j in. and that of the topconnection 2 in. Experiments with col-umn and steam pipe of these dimensionsand the Vi in. opening in the connectionto the boiler at the bottom showed thattile water in the column glass could notbe raised, by opening the gauge cock, toin., regardless of the amount orthe length of time the gauge cocks It is recommended that the bottomwater glass cock and bottom connect
Size: 2134px × 1171px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
