For a “steady” supply of water usually the immersion lenght is twice that of the length above the water level.Īn example is shown in this video found on youtube, I’ll think you will get the idea.

This means that if the water level drops below a certain point (immersed level is less than halve the length of the risisng main) no water can be transferred from the well this way. The density of this air/water mixture is about halve the density of water alone, which means you can get this mixture to rise approximately equal to the immersed depth of the pipeline. Gender: Location: One thing to remember is that when dredging you will have more water than material going into the hose, be sure not to 'Hog' the material or you will get a plug-up on the hose, you should be sucking about 10 to 15 material and the rest is water, with a 2' hose all rocks bigger than 1 1/2' should be moved by hand. Now the expensive part: youll need 100 of 4' rigid hose and enough 2' pressure hose to reach the nozzle from your pump with enough extra to move the nozzle around your dock. Get a 4' to 2' black iron reduction bell, and a 2' nipple. The compressed air will produce a forth of air and water, which has a lower density than water itself. Relatively easy to reduce the output side.

Not much is needed to build an airlift pump, that is the main advantage of these pumps, but to operate one, you should keep in mind that the immersion length is bigger than halve the length of the pipe.

Diy dredge pump