Modern Gasworks Practice

o MODERN GASWORKS PRACTICE entail a climb to the top of the beds, and there is, consequently, a certain amount of trouble connected with the operation. With the Reflux Pressure System a constant vacuum is maintained on the hydraulics day after day and week after week. The adjustment of gasmaking, in Fig. 188.—Batteky of Gauges and Gas Controller. Reflux Pbessuke System. accordance with the quality of coal employed and quality of gas desired, is carried out by other means. In other words, the vacuum remains constant, and the depth of seal is altered, both. immediately and simply. For instance, it may be assumed that with a certain quality of coal the usual practice is to work with five-tenths seal