General purpose engine pumps are suitable for clean and black water.
Plastic bodied engine pumps are suitable for pumping liquid fertiliser, agricultural chemicals and sea water.
Semi-trash engine pumps have a hard wearing silicone shaft seal for long life and can pump water with soft solids.
Trash duty engine pumps have hard wearing silicone seals for long life. They can pump water with soft solids and have a quick release cover for easy removal of blockages.