CHAPTER XXI
AUTOMATIC DOSING DEVICES
283. Types. 284. Operation. 285. Three Alternating Siphons. 286. Four or More Alternating Siphons. 287. Timed Siphons. 288. Multiple Alternating and Timed Siphons. 506–512
SEWERAGE AND SEWAGE TREATMENT
AUTOMATIC DOSING DEVICES
283. Types. 284. Operation. 285. Three Alternating Siphons. 286. Four or More Alternating Siphons. 287. Timed Siphons. 288. Multiple Alternating and Timed Siphons. 506–512
SEWERAGE AND SEWAGE TREATMENT