Grundfos makes a submersible pump made of stainless steel, with a built-in non-return valve, a sealed top bearing with high resistance against abrasive materials, reduced impeller diameters, replaceable wear rings, standard built-in stop ring to prevent up-thrust damage and pump and motor. They also make motors in 4" and 6" sizes in two main executions.

Little Giant makes submersible pumps, including those for industrial use, including their 2E-N model with 300 GPH @ 1 ft, epoxy coated aluminum housing and 1/4" MNPT outlet for 1/2" ID tubing, is thermally protected and has a hooded inlet and snap-off screen. This pump also has a 11.8' shut-off head capability, and is for commercial, industrial, and home applications such as water displays, air conditioners, machine tool coolants, and more.