Automatic siphonic apparatus as used in sewerage systems and in sewage purification plants . mewhat larger than that of the feed, in or^er to insure that therewill be siAfficient air forced into the feed to choke it. As in the case of the alternating siphons some provisionmust be made for cutting out one of the beds. The piping con-taining the valves shown in Plate XlVa providee for this. Promthe explanation given on page 23 it is easy to trace the courseof the air going from one feed to the other when all are inoperation. The valves at A, B, C end D are of the three waypattern and when all th
Automatic siphonic apparatus as used in sewerage systems and in sewage purification plants . mewhat larger than that of the feed, in or^er to insure that therewill be siAfficient air forced into the feed to choke it. As in the case of the alternating siphons some provisionmust be made for cutting out one of the beds. The piping con-taining the valves shown in Plate XlVa providee for this. Promthe explanation given on page 23 it is easy to trace the courseof the air going from one feed to the other when all are inoperation. The valves at A, B, C end D are of the three waypattern and when all the feeds are working in rotation thesevalves are set so that the air passes directly from the smalldome to the blow off trap of the next feed, ard doee net enterthe cut off pipes at anytime. Should it be desired to cut outfeed valves a and b would be opened, c and d closed and Aand B turned so that the air would take the course indicated bythe arrows. Prom this course it can be seen that the small domeof bed will force the trap connecting with feed thuscutting out feed
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectsewerage, bookyear190
