This pump can be completely submerged in the pumped liquid; therefore, it is applicable in conditions of limited spaces, very deep tanks and wells, etc. Alfa submersible pumps are also manufactured from these materials such as ductile iron or superalloys with high abrasion resistance, depending on industrial applications. Housings can be covered from the inside with anti-abrasive rubber. Since this type of pump is not is self-priming, it must work under pressure. Designed for extremely harsh conditions operation, they are very reliable and economical due to its exceptional durability.