The Sullivan Air Lift Pumping System

Sullivan Belted Air Compressors operating Air Lifts for mill service at a well-known mine in Mexico rator, having an opening in the top for suspending the air line; and is equipped with stuffing box, nipple, back outlet elbow for gauge con- nections and regulating mine cock. Note: This head may also be made up with a back outlet elbow on the discharge for suspending the air line, when it is neces- sary to carry the discharge to an elevation. Ratio of Lift to S ubmergence In actual practice, it has been found that the submergence may be varied with the lift, shorter lifts requiring a greater percentage of submergence. While there is no definite division line, the following proportion of submergence to lift will be found effective: For lifts up to 50 feet.............70 to 66 per cent submergence 50 to 100 feet.............66 to 55 per cent submergence 100 to 200 feet.............55 to 50 per cent submergence 200 to 300 feet.............50 to 43 per cent submergence 300 to 400 feet.............43 to 40 per cent submergence 400 to 500 feet.............40 to 33 per cent submergence It will be readily understood that the diameter of the water dis- propor_ charge or eduction pipe is of prime importance to secure the best tioning of efficiency, and must bear a relation not only to the amount of water PiP‘në to be handled, but also to the amount of air; so that for an equal amount of water the pipe size may vary with the lift and also with 15