Double Diaphragm Pumps


A double diaphragm pump is a form of positive displacement pump in which compressed air moves two diaphragms made of teflon, thermoplastic or rubber. These diaphragms combine to pump fluid, which is directed by a combination of flap valves,ball valves or check valves to its destination.

When a diaphragm moves in, it increases the volume of its chamber, thus decreasing the pressure and moving fluid into the chamber. Conversely, when a diaphragm moves out, it decreases the volume of the chamber and forces fluids out.

Double diaphragm pumps are economical and used in many areas of industry. They can pump fluids as benign as water, as hazardous as acids, and can also handle viscous fluids and slurries.