What type of pump must be used when drawing liquid out of a sewer?

Submersible pumps are specifically designed for applications such as drawing liquid from a sewer. These pumps are built to be submerged in the fluid, allowing them to efficiently handle the water and waste materials found in sewer systems. Their design incorporates sealing and protection from the liquid, ensuring reliable operation while submerged.

Submersible pumps are particularly effective in dealing with the challenges presented by sewer environments, including potential solids and debris that may be present in the liquid. They are capable of managing varying fluid levels and can pump efficiently at different depths, making them well-suited for this type of task.

Other pump types, such as manual, explosion-proof, or standard industrial pumps, do not provide the necessary features or safety for sewer applications. Manual pumps may not be feasible for deep or large scale pumping, explosion-proof pumps are designed for situations involving flammable materials, and standard industrial pumps are typically not intended for submerged operation or may lack the durability required for harsh sewer conditions. Thus, in the context of drawing liquid from a sewer, submersible pumps are the appropriate choice.