The immersible pumps by Hidrostal are successfully used in communal and industrial sewage sectors to support viscous media and fluids with high solids content. The immersible Hidrostal pumps have a motor with an autonomous cooling circuit. Because the medium to be supported is not used as a coolant, there are also no problems with overheating. Immersible pumps are particularly suitable when a noiseless, odourless, clean, reliable and easily maintained application is sought. All immersible pumps can of course also be dry installed.